Metal‐free Decarboxylative Annulation of 2‐Aryl‐2‐isocyano‐acetates with Aryldiazonium Salts: General Access to 1,3‐Diaryl‐1,2,4‐triazoles
作者:Yu‐Ting Tian、Fa‐Guang Zhang、Jing Nie、Chi Wai Cheung、Jun‐An Ma
DOI:10.1002/adsc.202001016
日期:2021.1.5
Isocyanoacetates are versatile substrates for the synthesis of heterocyclic compounds, but the concomitant decarboxylation remains rare. Herein we report a decarboxylative annulation reaction of 2‐aryl‐2‐isocyanoacetates with aryldiazonium salts. This metal‐free, base‐promoted protocol allows for the access to a broad collection of 1,3‐diaryl‐1,2,4‐triazoles, including chiral triazole‐based binaphthalene
异氰基乙酸酯是用于合成杂环化合物的通用底物,但伴随的脱羧作用仍然很少。在本文中,我们报告了2-芳基-2-异氰基乙酸盐与芳基重氮盐的脱羧环化反应。这种无金属,碱促进的方案允许访问广泛的1,3-二芳基1,2,4-三唑类化合物,包括基于手性三唑的双萘配体,药物模拟物和药物样分子的合成中间体。