Rh(III)-Catalyzed Divergent Synthesis of Alkynylated Imidazo[1,5-<i>a</i>]indoles and α,α-Difluoromethylene Tetrasubstituted Alkenes
作者:Fei Zhao、Jin Qiao、Yangbin Lu、Xiaoning Zhang、Long Dai、Xin Gong、Hui Mao、Shiyao Lu、Xiaowei Wu、Siyu Liu
DOI:10.1021/acs.orglett.1c01929
日期:2021.8.6
report the divergent synthesis of alkynylated imidazo[1,5-a]indoles and α,α-difluoromethylene tetrasubstituted alkenes through Rh(III)-catalyzed [4 + 1] annulation/alkyne moiety migration and C–H alkenylation/DG migration, respectively. This protocol features tunable product selectivity, excellent chemo-, regio-, and stereoselectivity, broad substrate scope, moderate to high yields, good tolerance of functional
在此,我们报告了通过 Rh(III) 催化的 [4 + 1] 环化/炔基迁移和 C–H 烯基化/DG合成炔基化咪唑并 [1,5- a ] 吲哚和 α,α-二氟亚甲基四取代烯烃迁移,分别。该协议具有可调的产品选择性、优异的化学选择性、区域选择性和立体选择性、广泛的底物范围、中等至高产率、良好的官能团耐受性和温和的氧化还原中性条件。