Catalytic Asymmetric Carbene Transfer Reactions of Diazo Oxime Ethers with Olefins and Their Synthetic Applications
作者:Linh Da Ho、Nansalmaa Otog、Ikuhide Fujisawa、Seiji Iwasa
DOI:10.1021/acs.orglett.9b02771
日期:2019.9.20
The first catalytic asymmetric cyclopropanation of diazo oxime ethers with olefins was developed. In the presence of a Ru(II)-Pheox catalyst, various optically active cyclopropyl oxime derivatives were obtained in high yields (up to 99%) with high enantioselectivities (up to 98% ee). Furthermore, optically active cyclopropyl oxime ethers could be successfully converted into the corresponding cyclopropyl
研发了重氮偶氮肟醚与烯烃的第一个催化不对称环丙烷化反应。在Ru(II)-Pheox催化剂的存在下,以高收率(高达99%)和高对映选择性(高达98%ee)获得了各种光学活性的环丙基肟衍生物。此外,光学活性的环丙基肟醚可以通过金属氢化物和格氏试剂介导的贝克曼重排成功地转化为相应的环丙基甲胺衍生物,这是评估生物学和药学活性的潜在候选者。