One-step Synthesis of Dialkyl 1,2-Dihydroquinoline-2,3-dicarboxylates. A Vinyltriphenylphosphonium Salt Mediated Intramolecular Wittig Reaction†

Abstract

Dialkyl 1,2-dihydroquinoline-2,3-dicarboxylates are formed in a one-pot reaction from amide derivatives of 2-aminobenzaldehyde, dialkyl acetylenedicarboxylates and triphenylphosphine in CH₂Cl₂ in high yields.

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