One-pot diastereoselective synthesis of α-aminonitriles from aldehydes, chiral amines, and trimethylsilyl cyanide under solvent-free conditions
摘要:
Treatment of aliphatic and aromatic aldehydes with chiral amines and trimethylsilyl cyanide in the absence or in the presence of Lewis acids (including lithium perchlorate) under solvent-free conditions afforded the corresponding alpha-aminonitriles in good yields and with a diastereoselectivity of 68 to 86%.
One-pot diastereoselective synthesis of α-aminonitriles from aldehydes, chiral amines, and trimethylsilyl cyanide under solvent-free conditions
摘要:
Treatment of aliphatic and aromatic aldehydes with chiral amines and trimethylsilyl cyanide in the absence or in the presence of Lewis acids (including lithium perchlorate) under solvent-free conditions afforded the corresponding alpha-aminonitriles in good yields and with a diastereoselectivity of 68 to 86%.
1,3-Dipolar Cycloadditions of Carbonyl Ylides to Aldimines: Scope, Limitations and Asymmetric Cycloadditions
作者:Staffan Torssell、Peter Somfai
DOI:10.1002/adsc.200600324
日期:2006.11
The development of a diastereoselective 1,3-dipolarcycloaddition of carbonylylides and imines for the synthesis of α-hydroxy-β-amino esters is described. The methodology is successfully applied to chiral α-methylbenzylimines affording enantiomerically pure syn-β-amino alcohols, which is exemplified with a short asymmetric synthesis of the paclitaxel side-chain. The use of chiral Rh(II) carboxylate