Novel bifunctional chiral urea and thiourea derivatives as organocatalysts: Enantioselective nitro-Michael reaction of malonates and diketones
A modular synthesis of novel bifunctional urea and thiourea organocatalysts derived from cheap, easily accessible natural and non-natural amino acids was reported. The generality of the synthesis was demonstrated in the preparation of catalysts 4a-i in th
Andres, Jose M.,Manzano, Ruben,Pedrosa, Rafae
supporting information; experimental part
p. 5116 - 5119
(2009/05/27)
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