B(C6F5)3-Catalyzed tandem cyclization/hydrosilylation for the step-economical construction of 1,2,3,4-tetrahydroquinoxalines from readily available starting materials has been developed.
B(C6F5)3催化的串联环化/氢硅烷化反应,可从易得的起始物构建1,2,3,4-四氢喹啉。
L-Lactate-mediated Dynamic Kinetic Resolution of α-Bromo Esters for Asymmetric Syntheses of α-Amino Acid Derivatives
作者:Yelim Kim、Kon Ji Park、Yun Soo Choi、Myung-Su Lee、Yong Sun Park
DOI:10.5012/bkcs.2013.34.8.2531
日期:2013.8.20
effective for the dynamic resolution of α-halo esters. 3 In our continuous efforts to develop L-lactic acid as a chiral auxiliary for the dynamic resolution, we have recently found successful results with ethyl L-lactate. We herein report ethyl L-lactate-mediated dynamickinetic resolution of α-bromo esters for the asymmetric preparation of α-amino acid derivatives. Treatment of racemic α-bromo-α-phenylacetic