G. Cardillo et al., Conjugate addition of hydroxylamino derivatives to alkylidene malonates inthe presence of chiral Lewis acids, TETRAHEDR-A, 12(17), 2001, pp. 2395-2398
The conjugate addition of O-benzylhydroxylamine and N,O-bis(trimethylsilyl)
hydroxylamine to alkylidene and arylidene malonates in the presence of Lewi
s acids affords the corresponding beta -hydroxylamino derivatives in good y
ields. The use of Cu(OTt)(2) in the presence of chiral bisoxazoline ligands
opens the possibility of performing this reaction in a catalytic and enant
ioselective way. (C) 2001 Elsevier Science Ltd. All rights reserved.