Direct Allylic C–H Bond Activation To Synthesize [Pd(η<sup>3</sup>-cin)(IPr)Cl] Complex: Application in the Allylation of Oxindoles
作者:Rong-Bin Hu、Chun-Hai Wang、Wei Ren、Zhong Liu、Shang-Dong Yang
DOI:10.1021/acscatal.7b02965
日期:2017.11.3
an efficient ligand in promoting allylic C–H bond functionlizations. Notably, the catalytic [Pd(η3-cin)(IPr)Cl] complex (where cin = cinnamyl) was formed in situ from direct C–H activation of allylic precursors, and was obtained by way of one-pot strategy with available IPr·HCl and allylbenzene. The catalyst exhibits high regioselectivity and stereoselectivity of the allylic C–H alkylation with oxindoles
N-杂环卡宾(NHCs)被发现为促进烯丙基C–H键功能化的有效配体。值得注意的是,催化[将Pd(η 3 -cin)(IPR)CL]络合物(其中CIN =肉桂基)形成在从烯丙基前体的直接C-H活化原位,并通过一釜策略可用的方式获得IPr·HCl和烯丙基苯。该催化剂具有宽范围的与吲哚的烯丙基CH烷基化反应的高区域选择性和立体选择性。