Category: Dioxole

Safety of H-Trp-OMe.HCl. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: H-Trp-OMe.HCl, is researched, Molecular C12H15ClN2O2, CAS is 7524-52-9, about Synthesis, molecular docking and biological evaluation of some new benzotriazines. Author is El Rayes, Samir M.; Ali, Ibrahim A. I.; Fathalla, Walid; Mahmoud, Mostafa A. A..

Me 2-(4-oxobenzotriazin-3(4H)-yl)alkanoates I [X = CH2, CH2CH2, CH(i-Pr); X1 = MeO] proved to be important intermediates for the preparation of some biol. interesting compounds containing the benzotriazinone ring system. The above compounds were prepared by direct diazotization of Me anthranilate followed by addition of amino acid esters hydrochloride in a one-pot strategy. An equivocal synthesis of compound I (X = CH2; X1 = MeO) was achieved by alkylation of benzotriazin-4(3H)-one with Me chloroacetate. A series of N-alkyl-2-(4-oxobenzotriazin-3(4H)-yl) alkanamides I (X = CH2, CH2CH2; X1 = NR1R2; R1 = i-Pr, n-Bu, t-Bu, cyclohexyl, etc., R2 = H; R1R2N = 1-piperidinyl, 4-morpholinyl) and Me 2-(2-(4-oxobenzotriazin-3(4H)-yl)alkanamido)alkanoates (dipeptides) I [X = CH2, CH2CH2; X1 = NHR3; R3 = MeO2CCH2, MeO2CCH(i-Bu), MeO2C(CH2)3, MeO2CCH(indol-3-ylmethyl)] were prepared via azide coupling from compounds I (X = CH2, CH2CH2; X1 = MeO). Esters I (X = CH2, CH2CH2; X1 = MeO) were converted into the corresponding hydrazides followed by condensation with aldehydes, such as 4-methoxybenzaldehyde, 4-dimethylaminobenzaldehyde and arabinose, to afford the corresponding hydrazone derivatives. All the synthesized compounds were subjected to the mol. docking using MOE 2008-10 software as agonists for E. coli Fab-H receptor and Vitamin D receptor for antibacterial and anticancer evaluation, resp. The most pronounced strong binding affinity towards the target E. coli Fab-H receptor was shown by the parent benzotriazin-4(3H)-one and compounds I [X = CH2, X1 = i-PrNH; X = CH2CH2, X1 = MeO2CCH2, MeO2C(CH2)3; X = CH2, X1 = 4-MeOC6H4CH:NN, 4-Me2NC6H4CH:NN; X = CH2CH2, X1 = 4-Me2NC6H4CH:NN]. On the other hand, the most pronounced strong binding affinity towards the target Vitamin D receptor were benzotriazin-4(3H)-one and compounds I [X = CH2, X1 = MeO2C(CH2)3; X = CH2CH2, X1 = MeO2CCH(indol-3-ylmethyl); X = CH2, X1 = 4-MeOC6H4CH:NN]. The in-vitro antibacterial activity of highest binding affinity docked compounds were tested against E. coli, Staphylococcus aureus and Salmonella spp. All the tested compounds gave effective pos. results against E. coli with inhibitory zone of about 1.1 cm, while were inactive against Staphylococcus aureus and Salmonella spp. The in-vitro cytotoxic activity of the highest binding affinity docked compounds were tested against human liver carcinoma cell line (HepG2) cancer cell lines. Many compounds showed potent cytotoxic activity with low IC50 values, especially benzotriazin-4(3H)-one (6.525μM) and I (X = CH2; X1 = 4-MeOC6H4CH:NN) (10.97μM) compared to standard drug doxorubicin (5.8μM).

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: H-Trp-OMe.HCl, is researched, Molecular C12H15ClN2O2, CAS is 7524-52-9, about Synthesis of Four Optical Isomers of Antiviral Agent NK0209 and Determination of Their Configurations and Activities against a Plant Virus, the main research direction is NK0209 isomer preparation antiviral tobacco mosaic virus antiviral; NK0209; antiviral activity; isomers; spatial configuration; synthesis.Related Products of 7524-52-9.

Previously, we reported for the first time that harmala alkaloids harmine and tetrahydroharmine exhibit activity against plant viruses, and we developed an analog, designated NK0209, that efficiently prevents and controls plant virus diseases. Here, to investigate the influence of the spatial configuration of NK0209 on its antiviral activities, we synthesized its four optical isomers, determined their configurations, and evaluated their activities against tobacco mosaic virus. All four isomers were significantly more active than ningnanmycin, which is one of the most successful com. antiviral agents, with in vivo inactivation, cure, and protection rates of 57.3±1.9%, 54.2±3.3%, 55.0±4.1% at 500μg/mL. Furthermore, anal. of structure-activity relationships demonstrated for the first time that the spatial conformation of NK0209 is an important determinant of its antiviral activity, and our results provide information about the possible optimum configuration for interaction of this mol. with its target protein.

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1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《2- and 5-Fluoronicotinic acids》. Authors are Beaty, R. D.; Musgrave, W. K. R..The article about the compound:Methyl 5-fluoro-3-pyridinecarboxylatecas:455-70-9,SMILESS:COC(=O)C1=CC(F)=CN=C1).Application In Synthesis of Methyl 5-fluoro-3-pyridinecarboxylate. Through the article, more information about this compound (cas:455-70-9) is conveyed.

5-Aminonicotinic acid (I) (3 g.) in 20 cc. 40% HBF4 at -5° treated with 2.5 g. NaNO2, the mixture kept 1 h., heated 30 min. at 50°, neutralized with Na2CO3, and the resulting salt refluxed 2-3 h. with 3% MeOH-H2SO4, gives 0.3 g. Me 5-fluoronicotinate, m. 48°. The 2-isomer of I (2 g.) in 10 cc. 40% HBF4, diazotized with 1 g. NaNO2 in 10 cc. H2O at 0 to -5°, and the solution kept 1 h. at 0°, heated 1 h. at 50-60°, and basified to pH 5 with NaOH, gives 33% 2-fluoronicotinic acid, m. 164-5°; the Me ester m. 74-5° and the amide m. 124°. 3-Fluoropicolinic acid could not be prepared by this method.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Frydrych, Jan; Slaveetinska, Lenka Postova; Draccinsky, Martin; Janeba, Zlatko researched the compound: 2-Bromomethyl-1,3-dioxolane( cas:4360-63-8 ).Application of 4360-63-8.They published the article 《Efficient synthesis of α-branched purine-based acyclic nucleosides: scopes and limitations of the method》 about this compound( cas:4360-63-8 ) in Molecules. Keywords: acyclonucleoside preparation; nitrogen heterocycle acetal anhydride alkylation; acyclonucleosides; hemiaminal ether; multi-component reaction; purine. We’ll tell you more about this compound (cas:4360-63-8).

An efficient route to acylated acyclic nucleosides containing a branched hemiaminal ether moiety was reported via three-component alkylation of N-heterocycle (purine nucleobase) with acetal (cyclic or acyclic, variously branched) and anhydride (preferentially acetic anhydride). The procedure employed cheap and easily available acetals, acetic anhydride, and trimethylsilyl trifluoromethanesulfonate (TMSOTf). The multi-component reaction was carried out in acetonitrile at room temperature for 15 min and provides moderate to high yields (up to 88%) of diverse acyclonucleosides branched at the aliphatic side chain. The procedure exhibited a broad substrate scope of N-heterocycles and acetals, and, in the case of purine derivatives, also excellent regioselectivity, giving almost exclusively N-9 isomers.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Synthesis and application of aqueous polycarbodiimide crosslinking agent(II): aqueous anionic polycarbodiimide crosslinking agent, published in 2011-08-03, which mentions a compound: 707-61-9, Name is 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, Molecular C11H13OP, Recommanded Product: 707-61-9.

Aqueous anionic polycarbodiimide crosslinking agent was synthesized with isophorone diisocyanate(IPDI), sodium hydroxyethyl sulfonate(SHES) and 3-methyl-1-phenyl-2-phospholene-1-oxide(MPPO) as raw material. The influences of different synthesis conditions such as the hydrophilic end-blocking agent and temperature, as well as the dosage of end-blocking on the blocking reaction were investigated and the optimal technol. condition was obtained. The developed crosslinking agents were introduced to acrylic finishing agent. It show that tensile strength of the film increases from 2.813MPa to 6.147MPa; the swelling rate in water, 0.05mol/L NaOH, Bu acetate decreases from 52.3% to 26.4%, 202.4% to 140.4%, 843.2% to 354.8% resp.; and the rub fastness of dry and wet are improved by adding the crosslinking agent to the acrylic finishing agents.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Application of 7524-52-9. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: H-Trp-OMe.HCl, is researched, Molecular C12H15ClN2O2, CAS is 7524-52-9, about A fast and direct iodide-catalyzed oxidative 2-selenylation of tryptophan. Author is Gao, Yu-Ting; Liu, Shao-Dong; Cheng, Liang; Liu, Li.

A metal-free 2-selenylation of tryptophan derivatives is reported, where the use of iodide as the catalyst and oxone as the oxidant is key to obtain high yields. Various functional groups within the di-selenyl and the indole ring are tolerated, and no racemization is generally observed

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1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Transition-Metal-Free Deconstructive Lactamization of Piperidines.Recommanded Product: 4360-63-8.

One of the major challenges in organic synthesis is the activation or deconstructive functionalization of unreactive C(sp3)-C(sp3) bonds, which requires using transition or precious metal catalysts. We present here an alternative: the deconstructive lactamization of piperidines without using transition metal catalysts. To this end, we use 3-alkoxyamino-2-piperidones, which were prepared from piperidines through a dual C(sp3)-H oxidation, as transitory intermediates. Exptl. and theor. studies confirm that this unprecedented lactamization occurs in a tandem manner involving an oxidative deamination of 3-alkoxyamino-2-piperidones to 3-keto-2-piperidones, followed by a regioselective Baeyer-Villiger oxidation to give N-carboxyanhydride intermediates, which finally undergo a spontaneous and concerted decarboxylative intramol. translactamization.

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Dioxole | C3H4O2 – PubChem

HPLC of Formula: 707-61-9. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about Synthesis and application characteristics of carbodiimide crosslinking agent.

Carbodiimide crosslinking agent was synthesized by 1,6-hexamethylene diisocyanate(HDI), polyethylene glycol monomethyl ether(MPEG Mn=350), N,N- dimethylethanolamine(DMEA) and 3-methyl-1-phenyl-2-phospholene-1-oxide. The influences of reaction temperature, the dosage of catalyst, nitrogen jet velocity, n(MPEG350)/n(DMEA)(mole ratio) and the pH value of water on the polymer properties were studied. This crosslinking agent was applied to acrylic acid modified collagen finishing agent. After adding crosslinking agent, the properties of film are better with the increase of flexibility resistance and tensile strength, swelling rate decreases and the brightness degree decreases a little.

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1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 4360-63-8, is researched, Molecular C4H7BrO2, about Ruthenium(II)biscarboxylate-Catalyzed Hydrogen-Isotope Exchange by Alkene C-H Activation, the main research direction is alkene deuterium exchange ruthenium biscarboxylate catalyst.Name: 2-Bromomethyl-1,3-dioxolane.

Ruthenium(II) biscarboxylate catalysis enabled efficient hydrogen isotope exchange of acrylic C-H bonds with user-friendly D2O. The C-H labeling was characterized by excellent positional selectivity and a broad functional group tolerance. The deuteration was successfully conducted on 55 mmol scale with TONs of >1000, while mechanistic studies provided insights into ruthenium(II) oxidase catalysis. The obtained deuterated alkenes enabled the synthesis of labeled standards for mass spectrometry of irradiated foodstuffs.

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1,3-Benzodioxole – Wikipedia,
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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Biosynthesis of penicillins. VI. N-2-Hydroxyethyl amides of some polycyclic and heterocyclic acetic acids as precursors》. Authors are Jones, Reuben G.; Soper, Quentin F.; Behrens, Otto K.; Corse, Joseph W..The article about the compound:2-Bromo-6-(bromomethyl)naphthalenecas:305798-02-1,SMILESS:BrCC1=CC2=CC=C(Br)C=C2C=C1).Reference of 2-Bromo-6-(bromomethyl)naphthalene. Through the article, more information about this compound (cas:305798-02-1) is conveyed.

2,6-MeC10H6NH2 (78 g.) in 80 mL. concentrated HCl and 200 mL. H2O at 0°, treated at 5° with 35 g. NaNO2 in 50 mL. H2O and, after 0.5 h., with 130 g. ice-cold 42% HBF4, gives 90% of the 2-diazonium fluoroborate, decomposition of which yields 69% 2-methyl-6-fluoronaphthalene (I), m. 77°. I (40 g.) at 210°, treated (15 min.) with 40 g. Br (with illumination with a 100-w. lamp), gives 82% 2-(bromomethyl)-6-fluoronaphthalene (II), b2 125-30°, m. 53°. II (48 g.), added to a refluxing solution of 30 g. KCN in 60 mL. H2O and 200 mL. EtOH, the EtOH removed after refluxing 4 h., 500 mL. H2O added, the solution extracted with ether, and the residue from the ether boiled 5 h. with 40 g. KOH in 40 mL. H2O and 200 mL. EtOH, gives 74% 6-fluoro-2-naphthaleneacetic acid, m. 138-9° (Me ester, b2 163-6°, m. 48-9°). 2,6-MeC10H6NH2 (63 g.) in 100 mL. H2O and 700 g. 48% HBr, treated (3-4 h.) at 5° with 45 g. NaNO2 in 75 mL. H2O and the diazonium solution poured (10 min.) into 170 g. CuBr in 800 mL. 48% HBr at 70-80°, gives 40% 6-bromo-2-methylnaphthalene (III), m. 142° III yields 80% 6-bromo-2-(bromomethyl)naphthalene, m. 124-5° this gives 69% 6-bromo-2-naphthaleneacetic acid, m. 175-6° (Me ester, b2 187-93°, m. 67-9°). 3,2-ClC10H6CHO (32.5 g.), 35 g. hippuric acid, 14.5 g. anhydrous AcONa, and 50 mL. Ac2O, heated on the steam bath 1 h., give 75% 2-phenyl-4-(3-chloro-2-naphthylmethylene)-5(4H)-oxazolone (IV), bright yellow, m. 192° 40 g. IV in 200 mL. 10% NaOH, refluxed 9 h., the mixture diluted to 1500 mL. with H2O, washed with ether, the aqueous solution treated with 20 mL. 12.5 N NaOH and 15 mL. 30% H2O2, allowed to stand overnight, the filtrate acidified with HCl, extracted with ether-C6H6, and the residue esterified, gives 37% Me 3-chloro-2-naphthaleneacetate, b2 163-5°, m. 49-50° the free acid m. 193-4°. 6,2-MeOC10H6Ac (100 g.), 25.5 g. S, and 87 g. morpholine, heated 18 h. at 140°, part of the morpholine removed in vacuo, 250 mL. AcOH and 350 mL. concentrated HCl added, and the mixture refluxed 24 h., give 67% 6-methoxy-2-naphthaleneacetic acid, m. 203-5° (Me ester, b1 192-3°, m. 86°, 73%). 5,6,7,8-Tetrahydro-2-acetonaphthone (50 g.), 13 g. S, and 40 mL. morpholine, refluxed overnight, 400 mL. concentrated HCl and 300 mL. H2O added, and the mixture again refluxed overnight, followed by esterification with EtOH and H2SO4, give Et 5,6,7,8-tetrahydro-2-naphthaleneacetate, b0.5 140-3°. 2-Acetylphenanthrene (13.2 g.), 3.2 g. S, and 10.5 g. morpholine, heated 15 h. at 160°, the mixture treated with 150 mL. AcOH and 36% HCl, and refluxed 24 h., give 81% 2-phenanthreneacetic acid, m. 187-8° the 3-isomer m. 174-5°, 84% (Me ester, b1.5 203-5°, 89%). 8-(Bromomethyl)quinoline (120 g.) in 250 mL. warm EtOH, added (0.5 h.) to 50 g. KCN in 100 mL. warm H2O and the mixture refluxed 1.5 h., gives 78% 8-(cyanomethyl)quinoline, m. 86-7°; hydrolysis with aqueous alc. KOH and esterification give 91% Et 8-quinolineacetate, b3 158-60°. Et 3-quinolinecarboxylate (70 g.), 62 g. AcOEt, and EtONa (12 g. Na and 0.52 mol absolute EtOH) in 100 cc. dry C6H6, refluxed 20 h., the cooled solution poured onto ice, diluted to 5 l. with H2O, treated with 50 mL. 12 N NaOH, washed with two 300 mL. portions of ether, and the aqueous solution neutralized with dilute H2SO4 and extracted with two 500-mL. portions of ether, give 75% Et 3-quinolylformylacetate, m. 84° 27 g. of the keto ester in 125 g. 25% H2SO4, heated 30 min. at 100°, gives 95% 3-acetylquinoline (V). V (7 g.), 5 g. S, 50 mL. (NH4)2S, and 25 mL. H2O, heated 20 h. at 145-50°, the residue extracted with two 300-mL. portions boiling 5% HCl, the solution refluxed 3 h., and the crude acid esterified, give 19% Et 3-quinolineacetate, b2.5 140-2°. pH2NC6H4CH2CO2H (46 g.), 10.5 g. FeSO4, 115 g. C3H5(OH)3, 23 g. PhNO2, and 53 mL. concentrated H2SO4, boiled 5 h., give 37 g. crude acid which, esterified with EtOH and HCl, gives 39% Et 6-quinolineacetate, b3 160° the free acid (VI) m. 218-20°. Et 6-quinolinecarboxylate and AcOEt, condensed with EtONa, give 87% Et 6-quinolineacetate, hydrolysis of which with 25% H2SO4 at 100° gives 90% 6-acetylquinoline, m. 76° the Willgerodt reaction gives 87.5% VI. 3,4 O2N(H2N)C6H3CO2H (108 g.) in 350 mL. concentrated HCl, treated with 125 g. Sn in portions (temperature below 90°), gives 87% (3,4-diaminophenyl)acetic acid-2HCl (VII), m. 222-4° (decomposition); Et ester-2HCl (VIII), m. 185-7° (decomposition); 3 g. VII and 20 mL. 98-100% HCO2H, heated several hrs., give 100% 5-benzimidazoleacetic acid-HCl, m. 240-2° the Et ester m. 65-6°, 75%. VIII (14 g.) in 200 mL. ice H2O, treated with excess COCl2, gives 95% Et 2-hydroxy-5-benzimidazoleacetate, m. 208-9°. NCCH2CO2Et (113 g.) and 15 g. (HOCH2CH2)3N in 100 mL. absolute EtOH, treated with a slow stream of H2S, the mixture poured after 5 days into ice-H2O, and 38 g. of the resulting oil and 23.1 g. ClCH2Ac in 300 cc. anhydrous ether kept 4 days, give 20.6 g. Et 4-methyl-2-thiazoleacetate, b17 136-9°. Thiaxanthydrol (42 g.), 30 g. CH2(CO2H)2, and 80 mL. C5H5N, heated 2 h. at 60-70° and 2 h. at 90-5° and the liquid poured into 600 mL. 2 N HCl, give 90% 9-thiaxantheneacetic acid, m. 167-8° (Me ester, b2 182-4°). The Ag salt of 2-benzylimidazole (53 g.) and 50 g. BrCH2CO2Et in 200 mL. xylene, refluxed 48 h., give 25.4% of the Et ester, m. 70-70.5°, of 2-benzyl-1-imidazoleacetic acid, m. 173-4°. Me 1-acenaphtheneacetate, b4 176-8°. N-2-Thienylacetyl-DL-valine m. 110-12°. Amides were prepared by heating the Me or Et ester of the various acids with a slight excess of HOCH2CH2NH2 at 100-150° for several hrs.; R in RCH2CONHCH2CH2OH is given, together with S (see part V). 2-C10H7 m. 125-7°, S 1.3; 1-bromo-2-naphthalene m. 155-6°, S 0.5; 6-fluoro-2-naphthalene m. 145-6°, S 1.2; 3-chloro-2-naphthalene m. 150-1°, S 0.3; 6-bromo-2-naphthalene m. 167-8°, S 0.9; 5,6,7,8-tetrahydro-2-naphthalene m. 88-90°, S 0.9; 1-nitro-2-naphthalene m. 154-5°, S 0.9; 6-methoxy-2-naphthalene m. 160°, S 1.1; 1-acenaphthene m. 160°, S 1.1; 9-fluorene m. 127-8°, S 0.7; 2-phenanthrene m. 135-7°, S 0.5; 3-isomer m. 133-5°, S 0.5; 1-pyrrole m. 85-7°, S 0.9; 2-thiophene m. 66-7°, S 1.8; 2-furan oil, S 0.4; 2,6-dihydroxy-5-pyrimidine m. 271-2°, S 1; 2-methyl-4-hydroxy-5-pyrimidine m. 184°, S 0.9; 3,4-methylenedioxyphenyl m. 99-100°, S 1; 2-methyl-4-thiazole m. 93-4°, S 0.85; 4-methyl-2-thiazole m. 80-2°, S 0.9; 2-pyridine m. 93-4°, S 1; 3-isomer m. 94° S 1; 6-methyl-2-pyridine m. 49-50°, S 1; 2-benzyl-1-imidazole m. 177-9°, S 1; 3-quinoline m. 151-2°, S 1; 6-isomer m. 135°, S 1; 8-isomer m. 92-3°, S 1; 2-benzimidazole m. 185-90°, S 1; 5-isomer m. 160-2°, S 1; 2-hydroxy-5-benzimidazole m. 245-6°, S 1; 7-hydroxy-4-coumarin m. 114-16°, S 1; 9-xanthene m. 157-8°, S 0.8; 9-thiaxanthene m. 148-9°, S 0.7; 5-hydantoin m. 160-2°, S 0.9. Only a few of these compounds appeared to be utilized readily by the mold for the formation of new penicillins. Several of the compounds appeared to effect some increase in penicillin yield or to change the differential assay value of the crude penicillin produced in their presence.

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1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem