Ligand-Controlled Regiodivergent Nickel-Catalyzed Hydrocyanation of Silyl-Substituted 1,3-Diynes
作者:Feilong Sun、Chengxi Yang、Jie Ni、Gui-Juan Cheng、Xianjie Fang
DOI:10.1021/acs.orglett.1c01262
日期:2021.5.21
A regiodivergent nickel-catalyzed hydrocyanation of 1-aryl-4-silyl-1,3-diynes is reported. When appropriate bisphosphine and phosphine–phosphite ligands are applied, the same starting materials can be converted into two different enynyl nitriles with good yields and high regioselectivities. The DFT calculations unveiled that the structural features of different ligands bring divergent alkyne insertion
报道了1-芳基-4-甲硅烷基-1,3-二炔的区域发散性镍催化的氢氰化。当使用适当的双膦和膦-亚磷酸酯配体时,相同的原料可以高产率和高区域选择性转化为两种不同的烯丙基腈。DFT计算揭示了不同配体的结构特征带来了不同的炔烃插入模式,进而导致不同的区域选择性。此外,已经通过数个下游转化证明了含氰基的1,3-烯炔的合成值。