Synthesis of Piperidine Derivatives by Rhodium- Catalyzed Tandem Reaction of<i>N</i>-Sulfonyl-1,2,3-Triazole and Vinyl Ether
作者:Sisi Yu、Yuehui An、Wenlin Wang、Ze-Feng Xu、Chuan-Ying Li
DOI:10.1002/adsc.201800191
日期:2018.6.5
A chemoselective tandem reaction of 4‐acyloxymethylene‐1‐sulfonyl‐1,2,3‐triazole and vinyl ether was reported, producing polysubstituted piperidine derivatives in up to 96% yield. The key intermediate N‐sulfonyl 1‐azadiene generated by migration of the OAc group to the α‐imino rhodium carbene was isolated and a plausible mechanism was proposed. Several related ring systems were constructed from the
据报道,4-酰氧基亚甲基-1-磺酰基-1,2,3-三唑与乙烯基醚发生化学选择性串联反应,产生多取代哌啶衍生物,收率高达96%。分离了由OAc基团迁移至α-亚氨基铑卡宾而生成的关键中间体N-磺酰基1-氮杂二烯,并提出了一个合理的机理。从高度功能化的产品构建了几个相关的环系统。