Regiodivergent Rhodium(I)-Catalyzed Azide–Alkyne Cycloaddition (RhAAC) To Access Either Fully Substituted Sulfonyl-1,2,3-triazoles under Mild Conditions
作者:Wangze Song、Nan Zheng、Ming Li、Kun Dong、Junhao Li、Karim Ullah、Yubin Zheng
DOI:10.1021/acs.orglett.8b02794
日期:2018.11.2
A regiodivergent Rh(I)-catalyzed azide–alkyne cycloaddition (RhAAC) was developed for the synthesis of both fully substituted 4-sulfonyl-1,2,3-triazoles and 5-sulfonyl-1,2,3-triazoles in high regioselectivities and yields under mild conditions in one step. Nonmetallic sulfur(II) or sulfur(VI) could efficiently control the regioselectivity of RhAAC reactions by chelation or nonchelation mechanisms to
开发了一种具有区域扩散性的Rh(I)催化的叠氮化物-炔烃环加成反应(RhAAC),用于在高区域选择性下合成完全取代的4-磺酰基-1,2,3-三唑和5-磺酰基-1,2,3-三唑在温和条件下一步收获。非金属硫(II)或硫(VI)可以通过螯合或非螯合机制有效控制RhAAC反应的区域选择性,从而获得出色的1,4-或1,5-区域选择性。该方法的实用性因其与水和空气的相容性,广泛的底物范围,良好的官能团耐受性,克级制备,对碳水化合物的适用性以及串联CuAAC-RhAAC反应而更加突出。