Tag: 100-200

Gu, Jian; Cai, Chun published an article in 2016, the title of the article was Synthesis of substituted indolizines via radical oxidative decarboxylative annulation of 2-(pyridin-2-yl)acetate derivatives with α,β-unsaturated carboxylic acids.Quality Control of Ethyl indolizine-1-carboxylate And the article contains the following content:

A copper mediated radical oxidative annulation of 2-(pyridin-2-yl)acetate derivatives I (R = CO2Me, CO2Et, CO2i-Pr, CO2t-Bu, CN) with α,β-unsaturated carboxylic acids R1CH=CHCOOH (R1 = H, C6H5, 4-ClC6H4, 2-thienyl, etc.) is developed. This study offers a new and expedient strategy for the synthesis of useful indolizines II in moderate to good yields and exhibits a broad substrate scope and good functional group tolerance. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Quality Control of Ethyl indolizine-1-carboxylate

The Article related to indolizine preparation, unsaturated carboxylic acid pyridine oxidative decarboxylative annulation copper catalyst, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Quality Control of Ethyl indolizine-1-carboxylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On December 9, 2020, Zhu, Zixi; Glinkerman, Christopher M.; Boger, Dale L. published an article.Recommanded Product: 707-07-3 The title of the article was Selective N1/N4 1,4-Cycloaddition of 1,2,4,5-Tetrazines Enabled by Solvent Hydrogen Bonding. And the article contained the following:

An unprecedented 1,4-cycloaddition (vs 3,6-cycloaddition) of 1,2,4,5-tetrazines is described with preformed or in situ generated aryl-conjugated enamines promoted by the solvent hydrogen bonding of hexafluoroisopropanol (HFIP) that is conducted under mild reaction conditions (0.1 M HFIP, 25°C, 12 h). The reaction constitutes a formal [4 + 2] cycloaddition across the two nitrogen atoms (N1/N4) of the 1,2,4,5-tetrazine followed by a formal retro [4 + 2] cycloaddition loss of a nitrile and aromatization to generate a 1,2,4-triazine derivative The factors that impact the remarkable change in the reaction mode, optimization of reaction parameters, the scope and simplification of its implementation through in situ enamine generation from aldehydes and ketones, the reaction scope for 3,6-bis(thiomethyl)-1,2,4,5-tetrazine, a survey of participating 1,2,4,5-tetrazines, and key mechanistic insights into this reaction are detailed. Given its simplicity and breath, the study establishes a novel method for the simple and efficient one-step synthesis of 1,2,4-triazines under mild conditions from readily accessible starting materials. Whereas alternative protic solvents (e.g., MeOH vs HFIP) provide products of the conventional 3,6-cycloaddition, the enhanced hydrogen bonding capability of HFIP uniquely results in promotion of the unprecedented formal 1,4-cycloaddition As such, the studies represent an example of not just an enhancement in the rate or efficiency of a heterocyclic azadiene cycloaddition by hydrogen bonding catalysis but also the first to alter the mode (N1/N4 vs C3/C6) of cycloaddition The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Recommanded Product: 707-07-3

The Article related to tetrazine aldehyde pyrrolidine hfip cycloaddition, ketone tetrazine pyrrolidine hfip cycloaddition, triazine preparation, Heterocyclic Compounds (More Than One Hetero Atom): Other 6-Membered Rings, Three Or More Hetero Atoms and other aspects.Recommanded Product: 707-07-3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On March 26, 2015, Marcin, Lawrence R.; Higgins, Mendi A.; Bronson, Joanne J.; Zusi, F. Christopher; Macor, John E.; Ding, Min published a patent.Application In Synthesis of Methyl 2-(2,6-difluorophenyl)acetate The title of the patent was Preparation of triazolopyridine ether derivatives useful in treatment of neurological and psychiatric disorders. And the patent contained the following:

The invention relates to compounds of formula I and their preparation, as modulators of the mGluR2 receptor potentially useful for the treatment of various disorders of the central nervous system including neurol. and psychiatric disorders. Compounds of formula I are claimed, in which R1 is H, CN, halo, (halo)alkyl, etc.; R2 is (halo)alkyl, (cycloalkyl)alkyl, etc.; R3 is Ar1 and OAr1; Ar1 is (un)substituted Ph, pyridinyl, pyrimidinyl, etc.; Y is bond and (un)substituted C3-6 cycloalkyl; Z is bond and (un)substituted C1-3 alkyl; provided that when Y and Z are bonds, R3 is Ar1; or pharmaceutically acceptable salts thereof. Example compound II was prepared by cyclocondensation of 2-hydrazinyl-4-((1-phenylcyclohexyl)methoxy)-3-(trifluoromethyl)pyridine with 2-cyclopropylacetyl chloride to afford 2-cyclopropyl-N’-(4-((1-phenylcyclohexyl)methoxy)-3-(trifluoromethyl)pyridin-2-yl)acetohydrazide, which underwent cyclization with Burgess reagent to yield II. Invention compounds were evaluated for their human mGluR2 inhibitory activity. From the assay, it was determined that II exhibited EC50 value of 1.8 nM. The experimental process involved the reaction of Methyl 2-(2,6-difluorophenyl)acetate(cas: 872046-08-7).Application In Synthesis of Methyl 2-(2,6-difluorophenyl)acetate

The Article related to triazolopyridine ether preparation treatment cns neurol psychiatric disorder, Heterocyclic Compounds (More Than One Hetero Atom): Other 6-Membered Rings, Three Or More Hetero Atoms and other aspects.Application In Synthesis of Methyl 2-(2,6-difluorophenyl)acetate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On June 30, 2022, El-Essawy, Farag A.; Ali, Noora T. G.; Boshta, Nader M. published an article.Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one The title of the article was Synthesis and Anti-HIV Activity of Poly-Heterocyclic Compounds Containing Quinoline Moiety. And the article contained the following:

A novel series of poly-heterocyclic compounds containing quinoline as antiviral agents against HIV was designed and synthesized. Structures of these novel derivatives was confirmed by IR, NMR, and EI-MS spectra. Most of the products was tested for their HIV inhibitory activity and characterized by high to moderate activity. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one

The Article related to pyrrolo pyrimidopyrazolo quinolinone preparation antiviral agent, Heterocyclic Compounds (More Than One Hetero Atom): Other 6-Membered Rings, Three Or More Hetero Atoms and other aspects.Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On September 18, 2008, Mochizuki, Akiyoshi; Kishida, Masamichi; Kanno, Hideyuki published a patent.Recommanded Product: Ethyl 3-fluoro-2-methylbenzoate The title of the patent was Preparation of diamide derivatives as FXa inhibiting antithrombotics. And the patent contained the following:

The title compounds I [ring A = benzene ring, pyridine ring, pyrimidine ring, etc.; R1 = H, halo, alkyl, etc.; R2 = H, carboxy, carbamoyl, etc.; T1 = N(R3)CO; R3 = H, alkyl; T2 = (CH2)mCONH; m = 1 or 2; Q1 = cyclohexyl, morpholinyl, pyrrolidinyl, etc.; Q2 = single bond, 1,4-phenylene, 1,4-cyclohexylene, etc.; Q3 = (un)substituted Ph, thienyl, pyridyl, etc.] are prepared Thus, 4-[4-(2-([(5-chlorothiophene-2-carbonyl)amino]methyl]phenylcarbamoyl)phenyl)-3-oxopiperazine-1-carboxylic acid tert-Bu ester was prepared from N-(2-aminobenzyl)-5-chlorothiophene-2-carboxamide and 4-(2-[N-tert-butoxycarbonyl-N-(carboxymethyl)amino]ethylamino)benzoic acid. Compounds of this invention showed IC50 values of 1.1 nM to 8.8 nM against human FXa. The experimental process involved the reaction of Ethyl 3-fluoro-2-methylbenzoate(cas: 114312-57-1).Recommanded Product: Ethyl 3-fluoro-2-methylbenzoate

The Article related to amide derivative preparation fxa inhibitor antithrombotic, Heterocyclic Compounds (More Than One Hetero Atom): Pyrazines and Quinoxalines (Including Piperazines) and other aspects.Recommanded Product: Ethyl 3-fluoro-2-methylbenzoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yuan, Zaifeng; Li, Na; Zhu, Chunyu; Xia, Chengfeng published an article in 2018, the title of the article was Copper-catalyzed synthesis of α-amino nitriles through methyl transfer from DMF to aromatic amines.Application of 85-91-6 And the article contains the following content:

Synthesis of α-amino nitriles RR1NCH2CN [R = C6H5, 4-ClC6H4, 1-naphthyl, etc.; R1 = CH3, C2H5, c-C6H11, etc.] and α-amino nitriles, e.g., I via copper-catalyzed activation of C(sp3)-H bonds of DMF at room temperature, which resulted in Me transfer to aromatic amines followed by cyanation was described. This process featured excellent functional group tolerance, broad substrate scope and high activity under ambient conditions. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Application of 85-91-6

The Article related to alpha amino nitrile preparation, secondary aromatic amine dimethyl formamide cyanation copper catalyst, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Nitriles, Isonitriles, and Acyl Cyanides and other aspects.Application of 85-91-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yuan, Zaifeng; Zhu, Chunyu; Ma, Zhixian; Xia, Chengfeng published an article in 2018, the title of the article was Copper-catalyzed amination of an α-C(sp3)-H bond in inactivated ethers to synthesize α-aminonitriles.Quality Control of Methyl N-Methylanthranilate And the article contains the following content:

A copper-catalyzed functionalization of inert cyclic ethers was developed to provide α-aminonitriles via a cascade oxidation/amination/ring-opening/cyanation reaction. A series of highly versatile α-aminonitriles were obtained from primary or secondary anilines, and heterocyclic and aliphatic amines with high yields. This process features excellent functional group tolerance, a broad substrate scope, and high activity under ambient conditions. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Quality Control of Methyl N-Methylanthranilate

The Article related to aminonitrile preparation, ether amine cyanide amination copper catalyst, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Nitriles, Isonitriles, and Acyl Cyanides and other aspects.Quality Control of Methyl N-Methylanthranilate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On February 22, 2000, Cameron, Kimberly O’Keefe; Lefker, Bruce Allen published a patent.Related Products of 142327-44-4 The title of the patent was Preparation of therapeutic chemicals for glaucoma treatment. And the patent contained the following:

Title compounds AB(KM)QZ [A = alkylsulfonyl, cycloalkylsulfonyl; Q = alkylene, alkylenethioalkylene, alkylenesulfonylalkylene; Z = COOH, CO2R, R = alkyl; B = N; K = alkylene, thioalkylene; M = aryl, heterocyclic], pharmaceutical acceptable salts, and delivery systems are prepared and tested as prostaglandin agonist for lowering internal pressure of mammalian eyes and for treating glaucoma. Thus, the title compound 7-[(4-butylbenzyl)methanesulfonylamino]heptanoic acid was prepared The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).Related Products of 142327-44-4

The Article related to prostaglandin agonist preparation antiglaucoma agent, organic acid preparation glaucoma treatment, Aliphatic Compounds: Carboxylic Acids and Peroxycarboxylic Acids and Their Sulfur-Containing Analogs and Salts and other aspects.Related Products of 142327-44-4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On July 2, 1998, Cameron, Kimberly O’Keefe; Ke, Hua Zhu; Lefker, Bruce Allen; Rosati, Robert Louis; Thompson, David Duane published a patent.Recommanded Product: Methyl 2-(3-formylphenyl)acetate The title of the patent was Preparation of alkylsulfonylaminocarboxylic acid as prostaglandin agonists. And the patent contained the following:

Title compounds AB(KM)QZ [I; A = acyl, alkylsulfonyl, cycloalkylsulfonyl, etc.; B = N, CH; K = electron pare, alkylene, thioalkylene, oxyalkylene, etc.; M = cyclic, heterocyclic, etc.; Q = alkylene, alkylenethioalkylene, etc.; Z = COOH, alkoxycarbonyl, tetrazolyl, oxadiazolyl, etc.], and pharmaceutically acceptable salts are prepared as prostaglandin agonists useful for the treatment of bone disorders including osteoporosis. The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).Recommanded Product: Methyl 2-(3-formylphenyl)acetate

The Article related to alkylsulfonylaminocarboxyli acid preparation prostaglandin agonist osteoporosis, Aliphatic Compounds: Carboxylic Acids and Peroxycarboxylic Acids and Their Sulfur-Containing Analogs and Salts and other aspects.Recommanded Product: Methyl 2-(3-formylphenyl)acetate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On February 28, 2015, Venkataraman, Sowmyalakshmi; Chadha, Anju published an article.Reference of (R)-Methyl 3-hydroxybutanoate The title of the article was Biocatalytic deracemization of aliphatic β-hydroxy esters: Improving the enantioselectivity by optimization of reaction parameters. And the article contained the following:

Optically pure aliphatic β-hydroxy esters were prepared from their racemates by deracemization using the biocatalyst Candida parapsilosis ATCC 7330. High optical purity (up to >99 %) and good yields (up to 71 %) of the product secondary alcs. were obtained. This study highlights the importance of optimization of reaction conditions using ethyl-3-hydroxybutanoate as the model substrate to improve the enantioselectivity (enantiomeric excess from 9 to 98 %). The present study emphasizes the broad substrate scope of the biocatalyst towards deracemization. This is the first report of Candida parapsilosis ATCC 7330-mediated deracemization of various alkyl-3-hydroxybutanoates to produce either the (R)-enantiomers (Me, Et, Pr, Bu, t-Bu, allyl-3-hydroxybutanoates) or (S)-enantiomers (pentyl, iso-amyl and iso-propyl-3-hydroxybutanoates). The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Reference of (R)-Methyl 3-hydroxybutanoate

The Article related to hydroxy ester beta biocatalytic deracemization candida parapsilosis, Aliphatic Compounds: Carboxylic Acids and Peroxycarboxylic Acids and Their Sulfur-Containing Analogs and Salts and other aspects.Reference of (R)-Methyl 3-hydroxybutanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics