Highly enantioselective asymmetric hydrogenation of (E)-β,β-disubstituted α,β-unsaturated Weinreb amides catalyzed by Ir(i) complexes of SpinPhox ligands
作者:Jian Shang、Zhaobin Han、Yang Li、Zheng Wang、Kuiling Ding
DOI:10.1039/c2cc30812f
日期:——
The Ir(I) complexes of chiral spiro phosphinoâoxazoline ligands (SpinPhox) have demonstrated good to excellent enantioselectivity in the asymmetric hydrogenation (AH) of a variety of (E)-β,β-disubstituted α,β-unsaturated N-methoxy-N-methylamides, affording the corresponding optically active Weinreb amides with up to 97% ee.
手性螺环膦-恶唑啉配体(SpinPhox)的铱(I)配合物在各种(E)-β,β-二取代α,β-不饱和N-甲氧基-N-甲基酰胺的不对称氢化(AH)反应中表现出良好至极佳的对映选择性,最高能以97%的对映体过量值获得相应的手性Weinreb酰胺。