作者:Ao, Yunlin、Ma, Haowen、Gan, Binghan、Wang, Wenjing、Zhang, Jiehao、Zhou, Wei、Zhang, Xiaoqi、Cai, Qian
DOI:10.1021/acs.orglett.4c01568
日期:——
A mild copper-catalyzed asymmetric Kinugasa/Michael addition cascade process is developed. The reaction of α, β-unsaturated ester-tethered propiolamides with nitrones provides an efficient protocol for the construction of functionalized chiral 2,6-diazaspiro[3.4]octane-1,5-dione products in satisfactory yields and with high enantio- and diastereoselectivities.
开发了一种温和的铜催化不对称 Kinugasa/Michael 加成级联工艺。 α, β-不饱和酯系丙炔酰胺与硝酮的反应为构建官能化手性 2,6-二氮杂螺[3.4]辛烷-1,5-二酮产物提供了一种有效的方案,其收率令人满意,并且具有高对映体和非对映选择性。