Alkynes, secondary amines and aldehydes, in the presence of a copper (
I) salt, undergo Mannich reactions to afford the corresponding aminome
thylalkynyl adducts on a solid support. Any member of this three-compo
nent reaction system can be immobilized on a resin providing three dis
tinct routes for the generation of structurally diverse compound libra
ries. (C) 1998 Elsevier Science Ltd. All rights reserved.