Esters-buliding-blocks

On January 21, 2010, Lee, Eun Kyung; Schoenfeld, Ryan Craig; Weikert, Robert James published a patent.Name: Ethyl 3-fluoro-2-methylbenzoate The title of the patent was Indole and indazole derivatives as monoamine reuptake inhibitors and their preparation, pharmaceutical compositions and use in the treatment of depression and anxiety. And the patent contained the following:

The invention discloses indole and indazole derivatives of formula I and their pharmaceutically acceptable salts, which are useful for treatment of diseases associated with monoamine deficiency. Also provided are pharmaceutical compositions, methods of using, and methods of preparing the compounds Compounds of formula I wherein A is CH, CR2 and N; Q is CH, CR1 and N; X is CH2, CH(OH) and CO; Y is (CHR5)0-2 and O(CHR5)0-2; Z1 is CH, N and CR3; Z2 is CH, S and CR3; B is (CH)0-1; R1 and R2 are independently CN, CONH2, SO2H, SO2-lower alkyl, halo, lower (halo)alkyl and lower alkoxy; R3 is lower (halo)alkyl, lower alkoxy, halo, CN, CONH2 and derivatives, NHSO2H, NHSO2-lower alkyl, and NH2 and derivatives; R4 is heterocycloalkyl and NH2 and derivatives; R5 is H, lower (hydroxy)alkyl, lower alkoxy and lower haloalkyl; with the proviso that if X is CO, Y is O(CH2)2, A, B, Q, Z1 and Z2 are CH, R1 and R3 are absent, R4 is NH(C(CH3)3), then R2 is a substitute; and their pharmaceutically acceptable salts and esters thereof, are claimed. Example compound II was prepared by a multi-step procedure starting from 2-(tert-butoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-8-carboxylic acid (procedure given). All the invention compounds were evaluated for their monoamine reuptake inhibitory activity. From the assay, it was determined that II exhibited the pKi values of 5.93, 6.41 and 6.95 against SERT, NEt and DAT, resp. The experimental process involved the reaction of Ethyl 3-fluoro-2-methylbenzoate(cas: 114312-57-1).Name: Ethyl 3-fluoro-2-methylbenzoate

The Article related to indole indazole preparation monoamine reuptake inhibitor treatment depression anxiety, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Name: Ethyl 3-fluoro-2-methylbenzoate

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

On March 22, 2022, Ma, Yuanhong; Tang, Ling published a patent.Electric Literature of 93476-46-1 The title of the patent was Preparation of arylcyclo[a]carbazoles and arylcyclo[g]pyridine indoles. And the patent contained the following:

The invention discloses the preparation method of arylcyclo[a]carbazole compounds with general formula I and arylcyclo[g]pyridine indole compounds with general formula II [where R1 = hydrogen, alkyl, substituted aryl, substituted heteroaryl, acyl, alkyl amide, alkyl ether, alkylthio, ester, alkylamino, alkenyl or alkynyl; R2 = alkyl, substituted aryl, substituted heteroaryl or alkyl ether; R3 = hydrogen, alkyl, substituted aryl, substituted heteroaryl, acyl, alkylamide, alkyl ether, alkylthio, ester, alkylamino, alkenyl or alkynyl; R4 = hydrogen, alkyl, substituted aryl or alkynyl heteroaryl or acyl; Ar = substituted aryl or substituted heteroaryl; R5 = alkyl acyl, arylacyl, ester or cyano; R6 = hydrogen, alkyl, substituted aryl, substituted heteroaryl, acyl, alkyl amide, alkyl ether, alkylthio, ester, alkylamino, alkenyl or alkynyl], which has the following advantages: mild reaction conditions, simple operation, wide source of raw materials, high utilization value of products, and is conducive to industrial production For example, 11-methyl-6-phenyl-11H-benzo[a]carbazole was prepared by oxidative cyclization of 1-methyl-1H-indole and 2-(2-oxo-2-phenylethyl)benzonitrile. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Electric Literature of 93476-46-1

The Article related to bronsted acid preparation benzonitrile indolizine indole carbazole oxidative cyclization, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Electric Literature of 93476-46-1

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

Hu, Huayou; Liu, Yun; Zhong, Hao; Zhu, Yulan; Wang, Chao; Ji, Min published an article in 2012, the title of the article was Heck-Type Cross-Dehydrogenative Coupling Reactions of Indolizines at the 3-Position with Electron-Deficient Alkenes through Palladium-Catalyzed C-H Activation.Formula: C11H11NO2 And the article contains the following content:

Palladium-catalyzed Heck-type cross-dehydrogenative coupling reactions of indolizines with electron-deficient alkenes gave 3-alkenyl substituted indolizines. E.g., in presence of Pd(OAc)2 as catalyst, Cu(OAc)2 as oxidant, and KHCO3 as base, reaction of indolizine (I) with Et acrylate gave up to 82.3% 3-alkenyl substituted indolizine (II) as the (E)-isomer. The reaction took place at the 3-position through Pd-catalyzed C-H activation. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Formula: C11H11NO2

The Article related to palladium catalyst dehydrogenative coupling reaction indolizine electron deficient alkene, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Formula: C11H11NO2

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

On May 31, 2017, Kluson, Petr; Stavarek, Petr; Penkavova, Vera; Vychodilova, Hana; Hejda, Stanislav; Bendova, Magdalena published an article.Application of 3976-69-0 The title of the article was Microfluidic chip reactor and the stereoselective hydrogenation of methylacetoacetate over (R)-Ru-BINAP in the [N8222][Tf2N]/methanol/water mixed phase. And the article contained the following:

Homogeneous asym. catalysts represented by organometallics of transition elements reveal very high activity and stereoselectivity in asym. hydrogenation of β-ketoesters. Recently, it appeared efficient to use ionic liquids of the [NR222][Tf2N] type for accommodation of the chiral catalytic complex. Even on the industrial scale it is becoming attractive to carry out hydrogenations with such immobilized complexes in a continuous regime in microreactors. Attention was paid to the stereoselective hydrogenation of methylacetoacetate (MAA) to isomeric (R)-(+) or (S)-(-)-methyl-3-hydroxybutanoates over a chiral ([RuCl((R)-BINAP)(p-cymene)]Cl) complex immobilized in the mixed [N8222][Tf2N]/methanol/water solvent phase, and performed inside of a microfluidic chip reactor. It was shown that the reaction could be successfully carried out in such an arrangement with a very high enantioselectivity (above 99%) and at very high conversion of MAA (above 97%). It was proven that the participation of a specific solvent (methanol or the mixture [N8222][Tf2N]/methanol/water) essentially influences the mechanism of the reaction. The solvents actively participate in the re-coordination of the catalytic complex in a series of reactions which is reflected in the values of reaction enthalpies. The specific process output was also evaluated. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Application of 3976-69-0

The Article related to methylacetoacetate stereoselective hydrogenation chiral catalyst ionic liquid microreactor, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Application of 3976-69-0

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

On June 15, 2011, Zhang, Yuhong; Huang, Lehao; Xie, Yongju; Niu, Tianmin published a patent.Application In Synthesis of Ethyl indolizine-1-carboxylate The title of the patent was Process for preparation of indolizine Mannich base-like compound. And the patent contained the following:

A process for preparation of indolizine Mannich base deri. is disclosed. The claimed title compound is shown in structure I (R = cyano, methoxycarbonyl, or ethoxycarbonyl; R1 = Me, Et, tert-Bu, H, or Cl; R2 = Me, H, or Cl; R3 = Me, Ph, or H). The claimed compound is prepared with N,N-dimethylaniline II and indolizine III via condensation reaction in the presence of catalyst. The catalyst is selected from CuCl, CuBr, CuI, or Cu2O. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Application In Synthesis of Ethyl indolizine-1-carboxylate

The Article related to indolizine mannich base preparation dimethylaniline indolizine condensation cuprous catalysis, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Application In Synthesis of Ethyl indolizine-1-carboxylate

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

On September 7, 2001, Yamabe, Haruko; Okuyama, Masahiro; Nakao, Akira; Ooizumi, Mitsuru; Saito, Ken-ichi published a patent.Computed Properties of 114312-57-1 The title of the patent was Preparation of cyclic amide derivatives as sigma receptor ligands. And the patent contained the following:

The title compounds I [X is alkyl, aryl, a heterocyclic group, etc.; Q is CH2, CO, O, etc.; n is an integer of 0 to 5; R1 and R2 are each hydrogen, alkyl, etc.; and B is Q1, etc.; A = (CH2)m; R3, R4, R5 and R6 are each hydrogen, halogeno, alkoxy, etc.; m is 1 or 2] are prepared In an in vitro test for inhibition of sigma-2 receptor binding, 4-bromo-2-[[1-[2-(4-fluorophenyl)-2-oxoethyl]piperidin-4-yl]methyl]isoindolin-1-one hydrochloride showed the Ki value of 2.8 nM. Formulations are given. The experimental process involved the reaction of Ethyl 3-fluoro-2-methylbenzoate(cas: 114312-57-1).Computed Properties of 114312-57-1

The Article related to cyclic amide preparation sigma receptor ligand, isoindolinone preparation sigma receptor ligand, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Computed Properties of 114312-57-1

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

Shang, Yaping; Jonnada, Krishna; Yedage, Subhash Laxman; Tu, Hua; Zhang, Xiaofeng; Lou, Xin; Huang, Shijun; Su, Weiping published an article in 2019, the title of the article was Rhodium(III)-catalyzed indole synthesis at room temperature using the transient oxidizing directing group strategy.Category: esters-buliding-blocks And the article contains the following content:

Rh-catalyzed reactions of N-alkyl anilines with internal alkynes at room temperature have been developed using an in situ generated N-nitroso group as a transient oxidizing directing group. Due to mild reaction conditions, this method enabled synthesis of a broad range of N-alkyl indoles, including even two indole-based medicinal compds I (R1 = Me, allyl, C6H5, etc.; R2 = 5-Me, 6-CH2OMe, 5-NO2, etc.) and II (R1 = Me, Et, i-Pr, etc.; R2 = H, 5-Me, 5-CO2Me, etc.; R3 = n-Bu, C6H5, 4-MeC6H5, etc.; R4 = Me, COMe, 3-FC6H5, etc.). This work disclosed the feasibility of the transient oxidizing directing group strategy in C-H functionalization reactions, which possesses the potential to enhance overall step-economy and impart new reactivity patterns to substrates. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Category: esters-buliding-blocks

The Article related to alkyl indole preparation, internal alkyne aniline transient oxidizing directing group rhodium catalyst, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Category: esters-buliding-blocks

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

Hu, Huayou; Liu, Yong; Xu, Juan; Kan, Yuhe; Wang, Chao; Ji, Min published an article in 2014, the title of the article was Palladium catalyzed oxidative Suzuki coupling reaction of indolizine at the 3-position using oxygen gas as the only oxidant.Formula: C11H11NO2 And the article contains the following content:

A Pd(OAc)2/O2 catalytic system with or without ligands was developed for an oxidative Suzuki coupling reaction of indolizines at the 3-position through C-H activation. The unwanted dimerization of 2,3-unsubstituted indolizines was inhibited by the addition of picolinic acid as a ligand. 1,2-Disubstituted indolizines that do not easily dimerize were reacted smoothly with arylboronic acids under ligand-free conditions. Furthermore, broad group tolerance was observed for both indolizines and arylboronic acids. Mild conditions, a broad array of starting materials and the use of a green oxidant are the advantages of this method. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Formula: C11H11NO2

The Article related to boronic acid aryl regioselective oxidative suzuki coupling indolizine, indolizine aryl preparation green chem, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Formula: C11H11NO2

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

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 March 6, 2015, Hu, Huayou; Li, Guodong; Hu, Weiming; Liu, Yun; Wang, Xiang; Kan, Yuhe; Ji, Min published an article.Formula: C11H11NO2 The title of the article was Synthesis of Pyrrolo[2,1,5-cd]indolizines through Dehydrogenative Heck Annelation of Indolizines with Diaryl Acetylenes Using Dioxygen as an Oxidant. And the article contained the following:

A dehydrogenative Heck annelation reaction of indolizine with diaryl acetylene via dual C-H bond cleavage was developed. Oxygen gas was employed as a clean oxidant in this catalysis under base-free conditions. Diarylpyrrolo[2,1,5-cd]indolizines were synthesized with high atom economy. In addition, kinetic isotope experiments provided evidence for C-H bond metalation of the 5-position of the indolizine as the rate-limiting step. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Formula: C11H11NO2

The Article related to dehydrogenative heck annelation indolizine diaryl alkyne palladium catalyst, pyrroloindolizine diaryl preparation, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Formula: C11H11NO2

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