Procedure was developed for the synthesis of an alkaloid of indole series uvarindole A. The key step of the synthesis is a successive indole alkylation with salicylic alcohol catalyzed with ZnCl2. The presumed intermediates are o-hydroxybenzyl carbocation and o-quinone methide.
Suzuki–Miyaura Cross-Coupling of Potassium Trifluoro(N-methylheteroaryl)borates with Aryl and Heteroaryl Halides
摘要:
The synthesis of potassium trifluoro(N-methylheteroaryl)borates and their use in cross-coupling reactions with various aryl and heteroaryl halides to construct N-methyl heteroaryl-substituted aromatic and heteroaromatic compounds are reported.
Compounds that inhibit protein kinases, compositions containing the compounds and methods of treating diseases using the compounds are disclosed.
抑制蛋白激酶的化合物、含有这些化合物的组合物以及利用这些化合物治疗疾病的方法被披露。
Brønsted Acid-Catalyzed Decarboxylative Redox Amination: Formation of <i>N</i>-Alkylindoles from Azomethine Ylides by Isomerization
作者:Hui Mao、Sichang Wang、Peng Yu、Huiqing Lv、Runsheng Xu、Yuanjiang Pan
DOI:10.1021/jo102218v
日期:2011.2.18
decarboxylative redox amination involving aldehydes with 2-carboxyindoline for the synthesis of N-alkylindoles is described. The decarboxylative condensations of aldehydes with 2-carboxyindoline produce azomethine ylides in situ, which then transform into N-alkylindoles by isomerization.
Tunable Hydride Transfer in the Redox Amination of Indoline with Aldehyde: An Attractive Intramolecular Hydrogen-Bond Effect
作者:Hui Mao、Runsheng Xu、Jieping Wan、Zhengyang Jiang、Cuirong Sun、Yuanjiang Pan
DOI:10.1002/chem.201001896
日期:2010.12.3
Hydride hijacked by “hydrogen”! N‐Alkylindoles and N‐alkylindolines were obtained in the redox amination of indoline with aldehyde, which was tuned by a hydrogen‐bond effect. Salicylaldehyde gave the indoline‐type product via intermolecular hydride transfer, while other aromatic aldehydes gave the indole‐type product via intramolecular hydride transfer.
of Buchwald–Hartwig amination to quaternary ammonium salts. In the presence of Pd(OAc)2 and t-BuXPhos, the coupling of aryl- or arylmethyltrimethylammonium triflates with NH-heteroarenes via C–Nbondcleavage affords the desired N-aryl or N-arylmethyl heteroarenes in moderate to excellent yields.
Nickel-Catalyzed Direct Synthesis of <i>N</i>-Substituted Indoles from Amino Alcohols and Alcohols
作者:Vinita Yadav、Sayali G. Jagtap、Ekambaram Balaraman、Santosh B. Mhaske
DOI:10.1021/acs.orglett.2c03617
日期:2022.12.16
primary alcohols, cyclic and acyclic secondary alcohols, and various substituted 2-aminophenyl ethyl alcohols are employed in the reactionconditions to provide a diverse range of N-alkylated indoles. Mechanistic studies revealed that the reaction proceeds through tandem N-alkylation via hydrogen autotransfer followed by the cyclization of N-alkylated alcohol intermediate.