Highly Efficient Asymmetric Michael Addition of Diaryl Phosphine Oxides to α,β-Unsaturated N-Acylated Oxazolidin-2-ones
作者:Depeng Zhao、Linqing Wang、Dongxu Yang、Yixin Zhang、Rui Wang
DOI:10.1002/asia.201200025
日期:2012.5
A highly efficient asymmetric Michael reaction of diaryl phosphine oxides with α,β‐unsaturated N‐acylated oxazolidinones has been developed. Excellent enantioselectivities (up to >99 % ee) and chemical yields (up to 99 %) were achieved with a broad substrate scope of the oxazolidinones. The bidentate property of oxazolidinones was found to be critical for high enantioselectivities.
已开发出一种高效的二芳基氧化膦与α,β-不饱和N-酰化的恶唑烷酮的不对称迈克尔反应。在恶唑烷酮的广泛底物范围内,可获得出色的对映选择性(最高> 99%ee)和化学收率(最高99%)。发现恶唑烷酮的双齿性质对于高对映选择性是关键的。