Category: Dioxole

Product Details of 707-61-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about MALDI-TOF/TOF CID Study of Polycarbodiimide Branching Reactions. Author is Gies, Anthony P.; Heath, William H.; Keaton, Richard J.; Jimenez, Jorge J.; Zupancic, Joseph J..

A combination of MALDI-TOF MS and TOF/TOF collision-induced dissociation (CID) experiments was conducted on toluene diisocyanate (TDI) based carbodiimide and Ph isocyanate (PI) carbodiimide mixtures to examine their degradation mechanisms and identify “”fingerprint”” side products associated with each of their synthesis. Findings include the first observance of the 3-methyl-1-phenyl-2-phospholene-1-oxide (MPPO)/carbodiimide (CDI) catalyst-attached intermediate and the use of CID fragmentation to verify its chem. structure and degradation processes. This work is significant for two reasons: (1) it identifies extensive branching as the root-cause of viscosity build-up in carbodiimides and (2) it presents a BF3-initiated mechanism leading to polyguanidine formation.

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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 Photoredox asymmetric catalytic enantioconvergent substitution of 3-chlorooxindoles, published in 2019, which mentions a compound: 4360-63-8, Name is 2-Bromomethyl-1,3-dioxolane, Molecular C4H7BrO2, Synthetic Route of C4H7BrO2.

An enantioconvergent substitution of 3-substituted 3-chlorooxindoles I (R = H, 6-Cl, 4-Br, 5-NO2, etc.; R1 = 4-FC6H4S(O)2, Me; Ar = Ph, naphthalen-2-yl, C6D5, etc.) with N-aryl glycines Ar1NHCH2C(O)OH [Ar1 = 4-methoxyphenyl, 4-methoxy-3-(trifluoromethyl)phenyl] under visible light irradiation is reported. A transition-metal-free cooperative catalysis platform with a dicyanopyrazine-derived chromophore (DPZ) as a photoredox catalyst and a chiral Bronsted acid catalyst is effective for these transformations, which involve a single-electron transfer redox step and an enantioselective radical coupling. A variety of valuable chiral 3-aminomethylene-3-substituted oxindoles II can be directly synthesized with high yields and enantioselectivities.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: H-Trp-OMe.HCl(SMILESS: N[C@@H](CC1=CNC2=CC=CC=C12)C(OC)=O.[H]Cl,cas:7524-52-9) is researched.Synthetic Route of C4H7BrO2. The article 《First total synthesis and pharmacological potential of a plant based hexacyclopeptide》 in relation to this compound, is published in Iranian Journal of Pharmaceutical Research. Let’s take a look at the latest research on this compound (cas:7524-52-9).

A new bioactive proline-rich cyclohexapeptide – diandrine C (6), previously isolated from whole plant of Drymaria diandra (Caryophyllaceae), was synthesized through coupling reactions of tetrapeptide unit Boc-Gly-L-Pro-L-Tyr-L-Trp-OH with dipeptide unit L-ProGly-OMe using N,N-diisopropylcarbodiimide (DIPC) as the coupling agent, followed by cyclization of linear hexapeptide unit under alk. condition. Structure of cyclohexapeptide was confirmed by means of chem., and spectroscopic analyses and also was screened for its antimicrobial and anthelmintic properties. Bioevaluation results indicated that the newly synthesized hexacyclopeptide exhibited potent antimicrobial activity against Gram-neg. bacteria Pseudomonas aeruginosa, Klebsiella pneumoniae and pathogenic Candida albicans at 6 μg/mL. Moderate to good level of antihelmintic activity against three earthworm species Megascoplex konkanensis, Pontoscotex corethruses and Eudrilus eugeniae was also observed at concentration of 2 mg/mL.

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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 Addressing species specific metabolism and solubility issues in a quinoline series of oral PDE4 inhibitors, published in 2010-01-01, which mentions a compound: 22353-34-0, Name is 5-Chloropyridin-3-amine, Molecular C5H5ClN2, Reference of 5-Chloropyridin-3-amine.

Species specific conversion of the lead PDE4 inhibitor 1 to the quinolone 3 was identified as the major route of metabolism in the cynomolgus monkey. Modification of the template to give the cinnoline 9 retained potency and selectivity, and greatly improved the pharmacokinetic profile in the cynomolgus monkey compared with 1. Addnl. SAR studies aimed at improving the solubility of 9 are also described.

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

SDS of cas: 25150-27-0. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 6,7-Dichlorobenzo[d]thiazol-2-amine, is researched, Molecular C7H4Cl2N2S, CAS is 25150-27-0, about Synthesis of some 5-nitro-2-furfurylidene derivatives and their antibacterial and antifungal activities. Author is Charris, Jaime; Monasterios, Melina; Dominguez, Jose; Infante, Wilson; De Castro, Norma.

New 5-nitro-2-furfurylidene derivatives I (R1 = Me, Ph; R2 = H, NO2; R3 = H, 6-F, 6-Cl, 6-OMe, 5,6-F2, etc.) were synthesized by reaction of 2-methyl-4-(5-nitro-2-furfurylmethylidene)-Δ2-oxazolin-5-one or 2-phenyl-4-(2-furfurylmethylidene)-Δ2-oxazolin-5-one with 2-aminobenzothiazoles. The compounds synthesized were identified by 1H-NMR, IR, MS and microanal. All products were screened for their in vitro antibacterial and antifungal activities against the standard strains: Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, and the yeast Candida albicans.

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

Baldaniya, B. B. published the article 《Synthesis and characterizations of N2-(aryl)-N4,N6-bis(6,7-dichloro-1,3-benzothiazol-2-yl)-1,3,5-triazine-2,4,6-triamines as biological potent agents》. Keywords: cyanuric chloride condensation thiazolamine; thiazolyl cyanuric chloride preparation reaction aryl amine; arylamino chlorobenzothiazolylamino triazine preparation antibacterial antifungal activity.They researched the compound: 6,7-Dichlorobenzo[d]thiazol-2-amine( cas:25150-27-0 ).Formula: C7H4Cl2N2S. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:25150-27-0) here.

Some novel N2-(aryl)-N4,N6-bis(6,7-dichloro-1,3-benzothiazol-2-yl)-1,3,5-triazine-2,4,6-triamines were synthesized and characterized by elemental analyses, IR, NMR, and mass spectra. The products were tested for their antibacterial activity against gram (+)ve and gram (-)ve bacteria and also on different strains of fungi. Introduction of -OH, -OCH3, -NO2, -Cl and -Br groups to the heterocyclic frame work enhanced antibacterial and antifungal activities.

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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: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Enantioselective Synthesis of 7(S)-Hydroxydocosahexaenoic Acid, a Possible Endogenous Ligand for PPARα, the main research direction is hydroxydocosahexaenoic acid synthesis.Reference of 2-Bromomethyl-1,3-dioxolane.

We report the first total synthesis of the polyunsaturated fatty acid 7-hydroxydocosahexaenoic acid (7-HDHA) in racemic form and the enantioselective synthesis of 7-(S)-HDHA. Both syntheses follow a convergent approach that unites the C1-C9 and C10-C22 fragments using Sonogashira coupling and Boland reduction as key steps. These syntheses enabled the unambiguous characterization of this natural product for the first time and helped establish 7(S)-HDHA as a possible endogenous ligand for peroxisome proliferator-activated receptor alpha.

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

Safety of 2-Bromomethyl-1,3-dioxolane. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Assembly of multicyclic isoquinoline scaffolds from pyridines: formal total synthesis of fredericamycin A. Author is Wang, Fang-Xin; Yan, Jia-Lei; Liu, Zhixin; Zhu, Tingshun; Liu, Yingguo; Ren, Shi-Chao; Lv, Wen-Xin; Jin, Zhichao; Chi, Yonggui Robin.

The construction of an isoquinoline skeleton typically starts with benzene derivatives as substrates with the assistance of acids or transition metals. Disclosed here is a concise approach to prepare isoquinoline analogs by starting with pyridines to react with β-ethoxy α,β-unsaturated carbonyl compounds under basic conditions. Multiple substitution patterns and a relatively large number of functional groups (including those sensitive to acidic conditions) can be tolerated the method. In particular, protocol allows for efficient access to tricyclic isoquinolines found in hundreds of natural products with interesting bioactivities. The efficiency and operational simplicity of introducing structural complexity into the isoquinoline frameworks can likely enable the collective synthesis of a large set of natural products. Here show that fredericamycin A could be obtained via a short route by using isoquinoline synthesis as a key step.

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

Meng, Chun-Yan; Liang, Xiao; Wei, Kun; Yang, Yu-Rong published an article about the compound: 5-(11bR)-Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl-5H-dibenz[b,f]azepine( cas:1265884-98-7,SMILESS:N1(P2OC3=CC=C4C=CC=CC4=C3C5=C6C=CC=CC6=CC=C5O2)C7=CC=CC=C7C=CC8=CC=CC=C81 ).Electric Literature of C34H22NO2P. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:1265884-98-7) through the article.

Ir-catalyzed enantioselective allylic alkylation of branched racemic allylic alcs. with malonates is described. Enabled by Carreira’s chiral Ir/(P, olefin) complex, the method described allows allylic substitution with various aromatic alcs. and malonates with excellent enantioselectivity. The malonates could be used directly as efficient nucleophiles without the need of preactivation.

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Reference:
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 《N-Oxides of nicotinic acid and its esters》. Authors are Clemo, G. R.; Koenig, H..The article about the compound:Methyl 5-fluoro-3-pyridinecarboxylatecas:455-70-9,SMILESS:COC(=O)C1=CC(F)=CN=C1).Reference of Methyl 5-fluoro-3-pyridinecarboxylate. Through the article, more information about this compound (cas:455-70-9) is conveyed.

Nicotinic acid (I) (1 part) in 3 parts glacial AcOH and 3 parts H2O2, heated 3 hrs. on the water bath, gives 70-80% of the N-oxide (II), pale yellow, m. 249° (decomposition); impure II, heated at 100°, decompose spontaneously. II (1 g.) in 20 ml. MeOH, saturated with HCl at 0° and refluxed 2 hrs., gives 0.5 g. of the Me ester, m. 97°; Et ester (III), m. 99.5°. The Et ester of I (2 g.), 10 ml. AcOH, and 30 ml. H2O2, heated 3 hrs. on the water bath, give 1.1 g. III.

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