New Trimethylaluminum-Induced Mannich-Type Reaction of Hydrazones

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Abstract
Trimethylaluminum addition to N-monoalkyl or N-monoaryl hydrazones followed by aldehyde addition leads to the formation of N-alkylated hydrazones in a new formal Mannich-type process. Addition compounds were also obtained in moderate yields with ketones. The mechanism as well as possible intermediates involved in the reaction are discussed.