Asymmetric synthesis of [2,3- (super)13 C (sub)2, (super)15 N]-4-benzyloxy-5,6-diphenyl-2,3,5,6-tetrahydro-4H-oxazine-2-one via lipase TL-mediated kinetic resolution of benzoin: general procedure for the synthesis of [2,3- (super)13 C (sub)2, (super)15 N]-L-alanine

Research has been conducted on the benzoin. The lipase TL-mediated kinetic resolution of this benzoin has been investigated and the results indicate that it has given the corresponding optically pure (R)-benzoin.