Ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes via a N-sulfonyl-1,2,3-triazole intermediate
作者:Renhe Liu、Min Zhang、Gabrielle Winston-McPherson、Weiping Tang
DOI:10.1039/c2cc34609e
日期:——
Regioselective ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes was developed. The reaction involves a copper-catalyzed cycloaddition of an alkyne with an arylsulfonyl azide and a silver-catalyzed carbene formation followed by ring expansion of a cyclopropyl carbene intermediate.
开发了炔基环丙烷到高度取代的环丁烯的区域选择性扩环。该反应涉及炔烃与芳基磺酰基叠氮化物的铜催化环加成和银催化的卡宾形成,然后是环丙基卡宾中间体的扩环。