Rh(<scp>ii</scp>)-catalyzed cycloadditions of 1-tosyl 1,2,3-triazoles with 2H-azirines: switchable reactivity of Rh-azavinylcarbene as [2C]- or aza-[3C]-synthon
作者:Yuanhao Wang、Xiaoqiang Lei、Yefeng Tang
DOI:10.1039/c5cc00268k
日期:——
The Rh(II)-catalyzed formal [3+2] and [3+3] cycloadditions of 1-tosyl 1,2,3-triazoles with 2H-azirines have been developed, which enable the efficient synthesis of polysubstituted 3-aminopyrroles and 1,2-dihydropyrazines, respectively. The reported [3+2] cycloaddition represents the first application of 1-sulfonyl 1,2,3-triazole as a [2C]-component in relevant cycloaddition reactions.
已开发出Rh(II)催化的1-甲苯磺酰基1,2,3-三唑与2H-叠氮基的正式[3 + 2]和[3 + 3]环加成反应,使多取代的3-氨基吡咯和1,2-二氢吡嗪。报道的[3 + 2]环加成反应是在相关的环加成反应中首次将1-磺酰基1,2,3-三唑作为[2C]组分应用。