Interrupted CuAAC‐Thiolation for the Construction of 1,2,3‐Triazole‐Fused Eight‐Membered Heterocycles from
<i>O</i>
‐/
<i>N</i>
‐Propargyl derived Benzyl Thiosulfonates with Organic Azides
作者:Raju Jannapu Reddy、Md. Waheed、Arram Haritha Kumari、Gamidi Rama Krishna
DOI:10.1002/adsc.202101256
日期:2022.1.18
click-sulfenylation of O-/N-propargyl benzyl thiosulfonates with organic azides has been disclosed. The unified CuAAC-thiolation provides a wide range of triazole-fused eight-membered heterocycles in good to high (51–94%) yields under mild reaction conditions. Moreover, a three-component reaction is also achieved involving O-/N-propargyl benzyl thiosulfonates, benzyl bromide, and sodium azide to deliver fused-triazoles
已公开了铜 (I) 催化的O-/N-炔丙基苄基硫代磺酸盐与有机叠氮化物的间断点击亚磺酰化。在温和的反应条件下,统一的 CuAAC-硫醇化提供了范围广泛的三唑稠合八元杂环,产率从好到高(51-94%)。此外,还实现了涉及O-/N-炔丙基苄基硫代磺酸盐、苄基溴和叠氮化钠的三组分反应,以 61-74% 的收率提供稠合三唑。从合成的角度来看,本协议已在克级反应中得到证明。基于实验结果和对照实验,还提出了一种似是而非的机制。