Month: March 2022

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 Structure of diene-phosphonous dihalide addition products and of derived phospholenes and phospholene oxides, published in 1968, which mentions a compound: 707-61-9, Name is 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, Molecular C11H13OP, Product Details of 707-61-9.

The cycloadducts of MePCl2 and butadiene, isoprene, 3,4-dimethylbutadiene, or piperylene give rise to 3-phospholene oxides on hydrolysis and 3-phospholenes (I) on reduction with Mg. The cycloadduct from butadiene also contained the 3-phospholene ring. The 3-phospholene oxides may be caused to rearrange to 2-phospholene oxides either thermally or by refluxing aqueous base. Acid treatment was effective only for rearranging the 3-Me derivative The 3,4-di-Me derivative resisted rearrangement conditions. PhPBr2 (synthesized by a new method from PhP(O)(OH)Cl and PBr3) also gave an adduct with isoprene shown by N.M.R. studies to contain the 3-phospholene ring, which was preserved in the oxide and phospholene. However, the isoprene-PhPCl2 adduct contained the 2-phospholene ring; the derived oxide and phospholene were also the 2-isomers. Independent syntheses of the isomeric 1-phenyl-3-methylphospholene oxides confirmed the assignments. The adduct from piperylene and PhPBr2 also gave on hydrolysis the 3-phospholene oxide, while that from PhPCl2 gave the 2-isomer. 26 references.

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

Product Details of 22353-34-0. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 5-Chloropyridin-3-amine, is researched, Molecular C5H5ClN2, CAS is 22353-34-0, about Addressing species specific metabolism and solubility issues in a quinoline series of oral PDE4 inhibitors. Author is Lunniss, C.; Eldred, C.; Aston, N.; Craven, A.; Gohil, K.; Judkins, B.; Keeling, S.; Ranshaw, L.; Robinson, E.; Shipley, T.; Trivedi, N..

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2-Bromomethyl-1,3-dioxolane(SMILESS: BrCC1OCCO1,cas:4360-63-8) is researched.Name: (2R)-1-[(1R)-1-[Bis(1,1-dimethylethyl)phosphino]ethyl]-2-(diphenylphosphino)ferrocene. The article 《Iridium-catalyzed acid-assisted asymmetric hydrogenation of oximes to hydroxylamines》 in relation to this compound, is published in Science (Washington, DC, United States). Let’s take a look at the latest research on this compound (cas:4360-63-8).

Asym. hydrogenations are among the most practical methods for the synthesis of chiral building blocks at industrial scale. The selective reduction of an oxime to the corresponding chiral hydroxylamine derivative remains a challenging variant because of undesired cleavage of the weak nitrogen-oxygen bond. We report a robust cyclometalated iridium(III) complex bearing a chiral cyclopentadienyl ligand as an efficient catalyst for this reaction operating under highly acidic conditions. Valuable N-alkoxy amines can be accessed at room temperature with nondetected overredn. of the N-O bond [e.g., (E)-I → (S)-II (97%, 97.5:2.5 er)]. Catalyst turnover numbers up to 4000 and enantiomeric ratios up to 98:2 are observed The findings serve as a blueprint for the development of metal-catalyzed enantioselective hydrogenations of challenging substrates.

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

SDS of cas: 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 Synthesis and application of aqueous cationic polycarbodiimide crosslinking agent. Author is Tong, Rong; Pang, Xiaoyan; Sun, Jing; Ding, Zhiwen; Jia, Jizhang.

Aqueous cationic polycarbodiimide crosslinking agent was synthesized with isophorone diisocyanate(IPDI), polypropylene glycol(PPG400), N,N-di-Me ethanolamine(DMEA) and 3-methyl-1-phenyl-2-phospholene-1-oxide(MPPO) as raw materials. The influences of synthesis conditions such as the dosage of catalysis agent, reaction time, reaction temperature, nitrogen jet velocity, hydrophilic end-blocking agent, blocking temperature, and the dosage of end-blocking agent on the properties of product were investigated. The developed crosslinking agents were introduced to protein finishing agent. And it is found that the properties of obtained finishing film agent are better in the water resistance, alk. resistance, solvent resistance and flexibility. Also, the tensile strength of film increases with a little decrease in brightness and transparency.

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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.COA of Formula: Br2Cu. The article 《Incorporation of the pentafluorosulfanyl group through common synthetic transformations》 in relation to this compound, is published in Monatshefte fuer Chemie. Let’s take a look at the latest research on this compound (cas:7524-52-9).

The incorporation of SF5 group into model amino acids has been achieved using com. available synthons substituted with this group. This work investigates the influence of the -SF5 group on a variety of common synthetic transformations utilized in fields of bioconjugation and drug development, namely, amide coupling, reductive amination, diazo-coupling, and CuAAC “”Click”” reactions. The influence of the novel substituent on the success of these common transformations is presented, and alternative approaches for those which proved unsatisfactory are proposed herein.

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

Product Details of 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 Recycling the Waste: The Development of a Catalytic Wittig Reaction.

The first Wittig reaction catalytic in phosphine has been developed. A variety of heteroaryl, aryl, and alkyl aldehydes could be efficiently converted to the corresponding alkenes in moderate to high yield with the utilization of the phosphine oxide precatalyst I.

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

Marsden, Stephen P.; McGonagle, Alison E.; McKeever-Abbas, Ben published an article about the compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide( cas:707-61-9,SMILESS:CC1=CP(CC1)(C2=CC=CC=C2)=O ).Recommanded Product: 707-61-9. 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:707-61-9) through the article.

The first examples of heterocycle synthesis by iminophosphorane formation/intramol. aza-Wittig cyclizations that are catalytic in the organophosphorus component are reported. The reaction has been demonstrated in the synthesis of both azine (phenanthridine) and azole (benzoxazole) heterocycles. E.g., in presence of phospholene oxide I, reaction of isocyanate 2-OCNC6H4C6H4CO2Me-2, formed from acyl azide 2-N3COC6H4C6H4CO2Me-2 by Curtius rearrangement, gave 71% phenanthridine II. Catalyst loadings down to 1 mol % have been used with little or no loss in reaction efficiency. The intimate involvement of the phosphine oxide in the catalytic cycle has been verified by in situ IR spectroscopy.

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

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Iridium-catalyzed enantioselective allylic substitution with aqueous solutions of nucleophiles, published in 2019, which mentions a compound: 1265884-98-7, mainly applied to iridium catalyzed enantioselective allylic substitution aqueous solution nucleophile, Recommanded Product: 1265884-98-7.

The iridium-catalyzed asym. allylic substitution under biphasic conditions is reported. This approach allows the use of various unstable and/or volatile nucleophiles including hydrazines, methylamine, t-Bu hydroperoxide, N-hydroxylamine, α-chloroacetaldehyde and glutaraldehyde. This transformation provides rapid access to a broad range of products from simple starting materials in good yields and up to >99% ee and 20:1 d.r.. Addnl., these products can be elaborated efficiently into a diverse set of cyclic and acyclic compounds, bearing up to four stereocenters.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 22353-34-0, is researched, SMILESS is NC1=CC(=CN=C1)Cl, Molecular C5H5ClN2Journal, Synthesis called Boric Acid Catalyzed Direct Amidation between Amino-Azaarenes and Carboxylic Acids, Author is Yun, Fan; Cheng, Chunhui; Zhang, Jing; Li, Jingxuan; Liu, Xia; Xie, Rui; Tang, Pingwah; Yuan, Qipeng, the main research direction is azaarylamide preparation green chem chemoselective; aminoazaarene carboxylic acid boric acid tetramethylpropanediamine catalyst amidation.Reference of 5-Chloropyridin-3-amine.

A novel and facile boric acid-catalyzed direct amidation between amino-azaarene compounds and carboxylic acids was developed. The amidation proceeded cleanly and provided good to excellent yields of the desired amides. Boric acid is a green and inexpensive catalyst. It was also found that N,N,N’,N’-tetramethylpropane-1,3-diamine acted as an additive accelerating this boric acid-catalyzed amidation. A mixed acid anhydride was postulated to be the active intermediate responsible for this successful amidation. This direct amidation was an atom- and step-economical reaction.

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

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Cu-Catalyzed site-selective C(sp2)-H radical trifluoromethylation of tryptophan-containing peptides, published in 2020-03-06, which mentions a compound: 7524-52-9, mainly applied to tryptophan peptide radical trifluoromethylation copper catalyst chirality; crystal structure tryptophan trifluoromethylation reaction mechanism solvent effect, Name: H-Trp-OMe.HCl.

Site-selective functionalization of C-H bonds within a peptide framework poses a challenging task of paramount synthetic relevance. Herein, we report an operationally simple C(sp2)-H trifluoromethylation of tryptophan (Trp)-containing peptides. This fluorination technique is characterized by its chirality preservation, tolerance of functional groups, and scalability and exhibits chemoselectivity for Trp residues over other amino acid and heterocyclic units. As a result, it represents a sustainable tool toward the late-stage peptide modification and protein engineering.

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