Preparation of alpha- and beta-substituted alanine derivatives by alpha-amidoalkylation or Michael addition reactions under heterogeneous catalysis assisted by microwave irradiation
A. De La Hoz et al., Preparation of alpha- and beta-substituted alanine derivatives by alpha-amidoalkylation or Michael addition reactions under heterogeneous catalysis assisted by microwave irradiation, TETRAHEDRON, 57(25), 2001, pp. 5421-5428
Silica-supported Lewis acids are useful catalysts in conjunction with micro
wave irradiation for the synthesis of a range of alanine derivatives. React
ion of methyl alpha -acetamidoacrylate (1) with different heterocycles, suc
h as Furan (2), pyrrole (3), N-benzylpyrrole (4), indole (5) and pyrazole (
6) and the carbocycle 1,3,S-trihydroxybenzene (7), led to several alpha -am
ino acid precursors. (C) 2001 Elsevier Science Ltd. All rights reserved.