Category: indole-building-block

On August 16, 2019, Khan, Faiyaz; Fatima, Mehvish; Shirzaei, Moheb; Vo, Yen; Amarasiri, Madushani; Banwell, Martin G.; Ma, Chenxi; Ward, Jas S.; Gardiner, Michael G. published an article.Application of 65417-22-3 The title of the article was Tandem Ullmann-Goldberg Cross-Coupling/Cyclopalladation-Reductive Elimination Reactions and Related Sequences Leading to Polyfunctionalized Benzofurans, Indoles, and Phthalanes. And the article contained the following:

On exposure to a combination of Cu[I]- and Pd[0]-based catalysts, compounds such as halophenols and halocycloalkenones engage in tandem Ullmann-Goldberg cross-coupling and cyclopalladation-reductive elimination reactions to give benzofurans. Related reactions involving hetero-Michael additions of o-halogenated phenols or anilines to propiolates and the Pd[0]-catalyzed cyclization of the resulting conjugates provide, in a one-pot process, alternately functionalized benzofurans, indoles, or phthalanes. The experimental process involved the reaction of Methyl 2-methyl-1H-indole-3-carboxylate(cas: 65417-22-3).Application of 65417-22-3

The Article related to halophenol haloenone ullmann goldberg cross coupling cyclopalladation reductive elimination, benzofuran preparation, indole preparation, phthalane preparation, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Application of 65417-22-3

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Martin-Mejias, Irene; Aragoncillo, Cristina; Yanai, Hikaru; Hoshikawa, Shoki; Fujimoto, Yuuki; Matsumoto, Takashi; Almendros, Pedro published an article in 2020, the title of the article was A catalyst-free bis(triflyl)ethylation/benzannulation reaction: rapid access to carbazole-based superacidic carbon acids from alkynols.Name: 1,5-Dimethyl-1H-indole-2-carbaldehyde And the article contains the following content:

Carbazoles possessing Tf2CHCH2 groups were obtained by the reaction of 1-(indol-2-yl)but-3-yn-1-ols with in-situ generated Tf2C=CH2 through vicinal difunctionalization of the alkyne moiety, where the vinyl-type carbocation intermediate was selectively attacked by the indole moiety and not by the carbanion moiety. The experimental process involved the reaction of 1,5-Dimethyl-1H-indole-2-carbaldehyde(cas: 883526-76-9).Name: 1,5-Dimethyl-1H-indole-2-carbaldehyde

The Article related to indolyl arylbutynol pyridiniumyl trifluoromethylsulfonyl ethanide regioselective triflylethylation benzannulation, aryl triflylethylcarbazole preparation, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Name: 1,5-Dimethyl-1H-indole-2-carbaldehyde

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

On June 30, 2002, Yamazaki, Kazuo; Kondo, Yoshinori published an article.Recommanded Product: Methyl 2-methyl-1H-indole-3-carboxylate The title of the article was Palladium-Catalyzed Synthesis of Indole-3-Carboxylates on a Solid Polymer Support. And the article contained the following:

The indolecarboxylates I (R = H, Me; R1 = H, 5-Me, 6-F3C, 6-O2N) were prepared via Pd-catalyzed cyclization of the resin-bound enamino esters II (X = iodo, Br; Q = hydroxymethyl polystyrene resin) and subsequent NaOMe promoted resin cleavage. The experimental process involved the reaction of Methyl 2-methyl-1H-indole-3-carboxylate(cas: 65417-22-3).Recommanded Product: Methyl 2-methyl-1H-indole-3-carboxylate

The Article related to solid polymer support indolecarboxylate preparation, indolecarboxylate preparation, palladium catalyst enamino ester solid phase cyclization, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Recommanded Product: Methyl 2-methyl-1H-indole-3-carboxylate

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

On August 31, 2007, Tanimori, Shinji; Ura, Haruna; Kirihata, Mitsunori published an article.Name: Methyl 2-methyl-1H-indole-3-carboxylate The title of the article was Copper-catalyzed synthesis of 2,3-disubstituted indoles. And the article contained the following:

The copper-catalyzed one-step synthesis of 2,3-disubstituted indoles I (R = Me, Et, tert-Bu, Me2C:CHCH2CH2, etc., R1 = Me; R = Ph, 2-naphthyl, 2-furyl, 2-thienyl, 2-pyridyl, R1 = Et) from readily available starting materials, 2-iodoaniline and various β-keto esters was described. The advantage of this method is the use of cheap catalysts and simple exptl. procedures under mild reaction conditions. As the substituted indole derivatives are important starting materials for the synthesis of biol. active indole alkaloids and drug candidates, this method would have potential usage for these purposes. The experimental process involved the reaction of Methyl 2-methyl-1H-indole-3-carboxylate(cas: 65417-22-3).Name: Methyl 2-methyl-1H-indole-3-carboxylate

The Article related to iodoaniline keto ester copper binol ullmann coupling heterocyclization, indole alkoxycarbonyl preparation, alkoxycarbonylindole preparation, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Name: Methyl 2-methyl-1H-indole-3-carboxylate

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Kim, Minyoung; Kumar Mishra, Neeraj; Park, Jihye; Han, Sangil; Shin, Youngmi; Sharma, Satyasheel; Lee, Youngil; Lee, Eui-Kyung; Kwak, Jong Hwan; Kim, In Su published an article in 2014, the title of the article was Decarboxylative acylation of indolines with α-keto acids under palladium catalysis: a facile strategy for the synthesis of 7-substituted indoles.COA of Formula: C8H8ClN And the article contains the following content:

Palladium-catalyzed decarboxylative acylation of highly substituted indolines with α-keto acids via C-H bond activation is described. This protocol provides efficient access to C7-carbonylated indoles, e.g., I, known to have diverse biol. profiles. The experimental process involved the reaction of 6-Chloro-2,3-dihydro-1H-indole(cas: 52537-00-5).COA of Formula: C8H8ClN

The Article related to indoline keto acid palladium decarboxylative acylation catalyst, acylated indoline preparation oxidation, indole acylated preparation, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.COA of Formula: C8H8ClN

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

On January 24, 2011, Roca-Lopez, David; Merino, Pedro; Sayago, Francisco J.; Cativiela, Carlos; Herrera, Raquel P. published an article.Electric Literature of 79815-20-6 The title of the article was Organocatalyzed Michael addition reaction by novel (2R,3aS,7aS)-octahydroindole-2-carboxylic acid, a new fused proline. And the article contained the following:

The authors present their results on the organocatalytic enantioselective Michael addition reaction of acetone to different nitroolefines using (2R,3aS,7aS)-octahydroindole-2-carboxylic acid [(R,S,S)-Oic] as a new and suitable catalyst. Computational calculations support the results obtained with (R,S,S)-Oic vs. its diastereomeric form (S,S,S)-Oic. The final products are obtained in good yields and moderate enantioselectivities (up to 58% ee). The experimental process involved the reaction of H-Idc-OH(cas: 79815-20-6).Electric Literature of 79815-20-6

The Article related to acetone nitroolefin michael addition, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Ketones and Derivatives, Including Quinones and Sulfur Analogs and other aspects.Electric Literature of 79815-20-6

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Georgieva, Miglena K.; Duarte, Filipe J. S.; Santos, A. Gil published an article in 2016, the title of the article was Directed electrostatic activation in enantioselective organocatalytic cyclopropanation reactions: a computational study.COA of Formula: C9H9NO2 And the article contains the following content:

Cyclopropane rings are versatile building blocks in organic chem. Their synthesis, by the reaction of sulfur ylides with α,β-unsaturated carbonyl compounds, has recently aroused renewed interest after the discovery of efficient catalysis by using (S)-indoline-2-carboxylic acid. In order to rationalize the behavior of this catalyst, MacMillan proposed a directed electrostatic activation (DEA) mechanism, in which the neg. carboxylate group interacts with the pos. thionium moiety, thus reducing the activation energy and increasing the reaction rate. More recently, Mayr refuted some of MacMillan conclusions, but accepted the DEA mechanism as a justification for the exptl. high reaction rates. In contrast, our results indicate that the selectivity obtained in the process seems to result from several strong hydrogen bond interactions between the two reacting species, while no strong evidence for a DEA mechanism was found. We also concluded that the hydrogen bonds don’t improve the reaction rate by lowering the activation energy of the rate-determining step, but can do it by promoting efficient reaction trajectories due to long-range complexation of the reagents. Finally, our results confirm that the cyclopropanation reaction occurs by a two-step mechanism, and that the overall enantioselectivity depends on the relative energies of the two steps, averaged by the relative populations of the iminium intermediates that are initially formed in the reaction. The experimental process involved the reaction of H-Idc-OH(cas: 79815-20-6).COA of Formula: C9H9NO2

The Article related to enantioselective cyclopropanation catalyst mechanism kinetics activation energy, Physical Organic Chemistry: Theoretical Organic Chemical Concepts, Including Quantum and Molecular Mechanical Studies and other aspects.COA of Formula: C9H9NO2

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

On October 31, 2009, Luo, Ren-Shi; Weng, Jiang; Ai, Hui-Bing; Lu, Gui; Chan, Albert S. C. published an article.Application In Synthesis of H-Idc-OH The title of the article was Highly efficient asymmetric Michael reaction of aldehydes to nitroalkenes with diphenylperhydroindolinol silyl ethers as organocatalysts. And the article contained the following:

New dihydroindole and perhydroindole derivatives were synthesized in good yields and evaluated as chiral catalysts in the asym. Michael reaction of aldehydes to nitroalkenes. (2S,3aS,7aS)-Diphenylperhydroindolinol silyl ether facilitated the reaction of a wide range of aldehyde and nitroalkene substrates, providing Michael adducts in nearly optically pure form (99% ee), good yields and high diastereoselectivities (syn/anti up to 99:1). These results show that perhydroindole derivatives can be highly efficient organocatalysts for the asym. Michael reaction, exhibiting comparable or even better enantioselectivities than proline derivatives The experimental process involved the reaction of H-Idc-OH(cas: 79815-20-6).Application In Synthesis of H-Idc-OH

The Article related to michael stereoselective aldehyde nitroalkene silyloxydiphenylmethylindole catalyst, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Aldehydes and Derivatives, Including Sulfur Analogs and other aspects.Application In Synthesis of H-Idc-OH

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

On December 31, 2022, Tan, Jian-Ping; Li, Kehan; Shen, Boming; Zhuang, Cheng; Liu, Zanjiao; Xiao, Kai; Yu, Peiyuan; Yi, Bing; Ren, Xiaoyu; Wang, Tianli published an article.Safety of 1,5-Dimethyl-1H-indole-2-carbaldehyde The title of the article was Asymmetric synthesis of N-bridged [3.3.1] ring systems by phosphonium salt/Lewis acid relay catalysis. And the article contained the following:

Here, a general and modular method for constructing these pseudo-natural N-bridged [3.3.1] ring systems via cascade process by bifunctional phosphonium salt/Lewis acid relay catalysis were reported. A wide variety of substrates bearing an assortment of functional groups (59 examples) were compatible with this protocol. Other features include a [3 + 2] cyclization/ring-opening/Friedel-Crafts cascade pathway, excellent reactivities and stereoselectivities, easily available starting materials, step economy and scalability. The obtained enantioenriched products showed potential of preliminary anticancer activities. Insights gained from our studies are expected to advance general efforts towards the catalytic synthesis of challenging even unprecedented chiral PNPs, offering new opportunities for bioactive small-mol. discovery. The experimental process involved the reaction of 1,5-Dimethyl-1H-indole-2-carbaldehyde(cas: 883526-76-9).Safety of 1,5-Dimethyl-1H-indole-2-carbaldehyde

The Article related to bridged indole alkaloid preparation antitumor, Heterocyclic Compounds (One Hetero Atom): Other Areno- and Diarenopyridines (Acridines, Quinolizines, etc.) and other aspects.Safety of 1,5-Dimethyl-1H-indole-2-carbaldehyde

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

On November 30, 2000, Mavunkel, Babu J.; Chakravarty, Sarvajit; Perumattam, John J.; Dugar, Sundeep; Lu, Qing; Liang, Xi published a patent.Electric Literature of 256935-86-1 The title of the patent was Preparation of 5-[4-benzylpiperidinyl(piperazinyl)]-indolecarboxamides as inhibitors of p38 kinase. And the patent contained the following:

The title compounds [I; one Z2 = CA, CR8A and the other = CR1, CR12, NR6, N (wherein R1, R6, R8 = H, noninterfering substituent; A = WiCOXjY; Y = COR2, an isostere; R2 = H, noninterfering substituent; W, X = spacer of 2-6Å; i, j = 0-1); Z3 = NR7, O; R3 = noninterfering substituent; n = 0-3; L1, L2 = linker; R4 = noninterfering substituent; m = 0-4; Z1 = CR5, N (R5 = H, noninterfering substituent); l, k = 0-2, wherein the sum of l and k = 0-3; Ar = aryl substituted with 0-5 noninterfering substituents, wherein two noninterfering substituents can form a fused ring; the distance between the atom of Ar linked to L2 and the center of the α ring is 4.5-24Å] which inhibit p38-α kinase (biol. data given), were prepared Thus, treating 6-methoxy-(4-benzylpiperidinyl)-indole-5-carboxamide with oxalyl chloride in CH2Cl2 afforded the indole-5-carboxamide II. The experimental process involved the reaction of 6-Chloro-1H-indole-5-carboxylic acid(cas: 256935-86-1).Electric Literature of 256935-86-1

The Article related to indolecarboxamide benzylpiperidinyl benzylpiperazinyl preparation p38 kinase inhibitor, Heterocyclic Compounds (More Than One Hetero Atom): Pyrazines and Quinoxalines (Including Piperazines) and other aspects.Electric Literature of 256935-86-1

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles