LITHIUM (ALPHA-METHYLBENZYL)ALLYLAMIDE - A DIFFERENTIALLY PROTECTED CHIRAL AMMONIA EQUIVALENT FOR THE ASYMMETRIC-SYNTHESIS OF BETA-AMINO ACIDS AND BETA-LACTAMS
The addition products from the highly stereoselective conjugate additions of lithium (αS)-(α-methylbenzyl)allylamide to α,β-unsaturated tert-butyl esters are efficiently deallylated with tris(triphenylphosphine)rhodium(l) chloride and converted, after transesterification to the methyl esters and cyc...
| Main Authors: | , |
|---|---|
| 格式: | Journal article |
| 出版: |
1995
|