A Versatile Catalyst for Intermolecular Direct Arylation of Indoles with Benzoic Acids as Arylating Reagents
作者:Jun Zhou、Peng Hu、Min Zhang、Shijun Huang、Min Wang、Weiping Su
DOI:10.1002/chem.201000529
日期:2010.5.25
(Pd(TFA)2/Ag2CO3/propionic acid) both electron‐rich and ‐deficient benzoicacids serve as arylating reagents for the direct functionalization of a wide rage of indoles by a combination of decarboxylation and CH bond activation. Depending on the nature of the benzoicacids, the reaction occurs selectively at either the C2‐ or C3‐position of indoles, which may arise from two different catalytic pathways (see scheme;
耦合在一起:借助通用的催化剂体系(Pd(TFA)2 / Ag 2 CO 3 /丙酸),富电子和不足的苯甲酸都可以作为芳构化试剂,通过以下两种方法的结合直接将多种吲哚官能化脱羧和CH键活化。根据苯甲酸的性质,该反应选择性地发生在吲哚的C2或C3位置,这可能是由两种不同的催化途径引起的(请参阅方案; TFA =三氟乙酸盐)。
Scaffold hopping by net photochemical carbon deletion of azaarenes
作者:Jisoo Woo、Alec H. Christian、Samantha A. Burgess、Yuan Jiang、Umar Faruk Mansoor、Mark D. Levin
DOI:10.1126/science.abo4282
日期:2022.4.29
Discovery chemists routinely identify purpose-tailored molecules through an iterative structural optimization approach, but the preparation of each successive candidate in a compound series can rarely be conducted in a manner matching their thought process. This is because many of the necessary chemical transformations required to modify compound cores in a straightforward fashion are not applicable
Direct C-3 arylation of N-acetylindoles with anisoles using phenyliodine bis(trifluoroacetate) (PIFA)
作者:Yonghong Gu、Dawei Wang
DOI:10.1016/j.tetlet.2010.02.022
日期:2010.4
The direct C-3 arylation of N-acetylindoles with anisoles was described in this Letter. In the presence of phenyliodine bis(trifluoroacetate) (FIFA) and BF(3)-Et(2)O, the reaction of N-acetylindoles with anisoles provided C-3 arylindoles with high regioselectivity under mild conditions. (C) 2010 Elsevier Ltd. All rights reserved.
Oxidant-controlled regioselectivity in the oxidative arylation of N-acetylindoles
作者:Shathaverdhan Potavathri、Ashley S. Dumas、Timothy A. Dwight、Gregory R. Naumiec、Jeffrey M. Hammann、Brenton DeBoef
DOI:10.1016/j.tetlet.2008.04.073
日期:2008.6
N-Acetylindoles can be oxidatively coupled with arenes such as benzene or pentafluorobenzene in dioxane. The use of Cu(OAc)(2) as the stoichiometric oxidant produces selective arylation at the 3-position of indole while AgOAc produces selective arylation at indole's 2-position. (C) 2008 Elsevier Ltd. All rights reserved.
Direct Bis-Alkyl Thiolation for Indoles with Sulfinothioates under Pummerer-Type Conditions
作者:Peng Qi、Fang Sun、Ning Chen、Hongguang Du
DOI:10.1021/acs.joc.1c02502
日期:2022.1.21
applications. This approach enabled double C–H thiolation at the C2 and C3 of the indole in one pot. The mechanism studies suggested the thiolation was realized through the sulfoxonium salt rather than sulfenylcarboxylate.