Addition of Acetone towards β-Cyano-α-oxoesters Catalyzed by L-Proline: Dynamic Kinetic Resolution
作者:Yajun Wang、Yawen Zhang
DOI:10.1002/cjoc.201090219
日期:——
β‐Cyano‐α‐oxoesters were found to undergo asymmetric aldol addition reaction with acetone in the presence of 10 mol% of L‐proline. With the racemic starting material, dynamickineticresolution (DKR) was achieved in quantitative yields with good diastreroselectivity of up to 85:15 dr and excellent ee up to 99% for the major diastereomer.
CRAGOE, E. J. ,, JR.;ROONEY, C. S.;WILLIAMS, H. W. R.
作者:CRAGOE, E. J. ,, JR.、ROONEY, C. S.、WILLIAMS, H. W. R.
DOI:——
日期:——
US4537902A
申请人:——
公开号:US4537902A
公开(公告)日:1985-08-27
4-Substituted-3-hydroxy-3-pyrroline-2,5-dione inhibitors of glycolic
申请人:Merck & Co., Inc.
公开号:US04537902A1
公开(公告)日:1985-08-27
Novel 4-substituted-3-hydroxy-3-pyrroline-2,5-diones are disclosed which inhibit glycolic acid oxidase and thus are useful in the treatment and prevention of calcium oxalate renal lithiasis.