Rhodium(II)-Catalyzed Highly Selective 1,3-Insertion Reactions Using <i>N</i>-Sulfonyl-1,2,3-Triazoles with Heteroaryl Ethers or Heteroaryl Alcohols
作者:Ga Young Kook、Daegeun Kim、Min Ki Chae、Haye Min Ko
DOI:10.1021/acs.joc.2c00467
日期:2022.6.3
The transformation of N-sulfonyl-1,2,3-triazoles via insertion/rearrangement is achieved using 2-hydroxybenzimidazole or 2-alkoxybenzothiazole over 3 mol % Rh2(Oct)4 for the synthesis of α-((1H-benzo[d]imidazol-2-yl)amino) ketones or (Z)-2-alkoxy-2-phenylethenamines. This regio- and stereoselective reaction proceeds under mild conditions, is tolerant of functional groups, and has a broad substrate
N-磺酰基-1,2,3-三唑通过插入/重排的转化是使用2-羟基苯并咪唑或2-烷氧基苯并噻唑在3 mol % Rh 2 (Oct) 4上合成α-((1 H-苯并[ d ]imidazol-2-yl)amino) 酮或 ( Z )-2-alkoxy-2-phenylethenamines。这种区域选择性和立体选择性反应在温和的条件下进行,对官能团具有耐受性,并且具有广泛的底物范围。值得注意的是,虽然一般的铑催化反应涉及烯丙基乙烯基醚的 sigmatropic 重排,但本合成方法防止了由于苯并咪唑基团的重排,允许获得 ( Z)-烯烃。