Regiocontrolled Synthesis of Polysubstituted Pyrroles Starting from Terminal Alkynes, Sulfonyl Azides, and Allenes
作者:Tomoya Miura、Kentaro Hiraga、Tsuneaki Biyajima、Takayuki Nakamuro、Masahiro Murakami
DOI:10.1021/ol401340u
日期:2013.7.5
1-Sulfonyl-1,2,3-triazoles, readily prepared from terminal alkynes and sulfonyl azides, react with allenes in the presence of a nickel(0) catalyst to produce the corresponding isopyrroles. The initially produced isopyrroles are further converted to a wide range of polysubstituted pyrroles through double bond transposition and Alder-ene reactions.
由末端炔烃和磺酰基叠氮化物容易制备的1-磺酰基-1,2,3-三唑在镍(0)催化剂存在下与丙二烯反应生成相应的异吡咯。最初生产的异吡咯通过双键转座和Alder-ene反应进一步转化为多种多取代的吡咯。