Asymmetric Sonogashira Coupling with a Chiral Palladium Imidazoindole Phosphine Complex
作者:Yasuhiro Uozumi、Haifeng Zhou
DOI:10.1055/s-0033-1339873
日期:——
The asymmetric Sonogashira coupling of 1-(2,6-dibromophenyl)naphthalene or 4,16-dibromo[2,2]paracyclophane with various terminal alkynes was carried out with a palladium complex of a homochiral imidazoindole phosphine, a derivative of a (3R,9aS)-2-aryl-[3-(2-dialkylphosphanyl)phenyl]tetrahydro-1H-imidazo[1,5a]indol-1-one, to give the corresponding axially chiral monoalkynylated biaryl products with
1-(2,6-二溴苯基)萘或 4,16-二溴[2,2] 对环烷与各种末端炔烃的不对称 Sonogashira 偶联是用同手性咪唑并吲哚膦的钯配合物进行的,这是一种 (3R ,9aS)-2-芳基-[3-(2-二烷基膦基)苯基]四氢-1H-咪唑并[1,5a]indol-1-one,得到相应的轴向手性单炔基联芳基产物,对映体过量高达72% .