2-diazo-N-phenylacetamide 、 1-萘甲醛 在
zirconium complex of (R)-3,3'-diiodo-BINOL on 3 Å MS 作用下,
以
乙腈 为溶剂,
以97%的产率得到(2R,3R)-3-(naphthalen-1-yl)-N-phenyloxirane-2-carboxamide
A highly enantioselective Darzens reaction between diazoacetamides and aldehydes catalyzed by a (+)-pinanediol–Ti(OiPr)4 system
作者:Gang Liu、Daming Zhang、Jian Li、Guangyang Xu、Jiangtao Sun
DOI:10.1039/c2ob27179f
日期:——
A highly efficient enantioselective Darzens reaction of aldehydes with diazoacetamides catalyzed by a (+)-pinanediol–Ti(OiPr)4 system has been developed. The cis-glycidic amides were obtained in high yields and with moderate to excellent enantioselectivity (up to 99%).
已经开发了由(+)-ane二醇-Ti(O i Pr)4系统催化的醛与重氮乙酰胺的高效对映选择性Darzens反应。所述CIS以高收率得到,并与中度至良好的对映选择性(高达99%) -缩水甘油酰胺。