I. Pashkuleva et al., Phase-transfer catalysed reactions of mono- and disubstituted N-(benzylidene)-benzylamines with cinnamic acid derivatives, J CHEM R-S, (3), 2000, pp. 103-105
Tert-butyl esters 3 and 8-cyanopyrrolidines 6 are prepared by phase-transfe
r-catalysed reactions of sym metrical 4,4'-disubstituted N-(benzylidene)ben
zylamines with tert-butyl cinnamate and alpha-phenylcinnamonitrile, respect
ively; similar reactions of mono-substitited N-(benzylidene)benzylamines af
forded mixtures of compounds 3, respectively 6, and their regioisomers 3(A)
and 6(A).