Highly Chemo- and Enantioselective Rh-Catalyzed Hydrogenation of β-Sulfonyl-α,β-unsaturated Ketones: Access to Chiral γ-Ketosulfones
作者:Gang Liu、Congcong Yin、Xuanliang Yang、Anqi Li、Minyan Wang、Xumu Zhang、Xiu-Qin Dong
DOI:10.1021/acs.orglett.0c03517
日期:2021.1.1
Rh-catalyzed highly chemo- and enantioselective hydrogenation of β-sulfonyl-α,β-unsaturated ketones was first successfully developed. Remarkably, a variety of enantioenriched γ-ketosulfones were generated in good to high yields with excellent chemo/enantioselectivities (82–99% yields, >99:1 chemoselectivity, 88 to >99% ee). Moreover, the gram-scale asymmetric hydrogenation was carried out smoothly
首先成功开发了Rh催化的β-磺酰基-α,β-不饱和酮的高度化学和对映选择性加氢反应。值得注意的是,产生了多种对映体富集的γ-酮砜,具有良好的化学/对映选择性(82-99%的产率,> 99:1的化学选择性,88至> 99%ee)。此外,克级不对称氢化以97%的收率和97%的ee顺利进行。DFT的初步计算为高化学选择性和对映选择性提供了合理的解释。