Tetrahedron Letters p. 327 - 330 (1993)
Update date:2022-08-05
Topics:
Pfau, Michel
Chiriacescu, Marina
Revial, Gilbert
Cyclic amidines 4 and 11 have been shown to be in N,C-tautomeric equilibrium with the corresponding ene-1,1-diamines which can be C-alkylated by methyl acrylate, leading respectively to the corresponding functionalized substituted amidines 6 (or 7) and 12.Key-words: amidine-ene-1,1-diamine tautomerism; C-alkylation; Michael-type reaction; α-alkylated cyclic amidines; methyl acrylate
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