Reaction of N-acetylimidazole With Enamines

N-Acetylimidazole is a commonly used acylating reagent. When it is allowed to react with several typical enamines, amides are produced rather than the expected acylated enamines. (C) 2003 Elsevier Ltd. All rights reserved

Pyrolysis of Perhydro[1,2-c][1,3]Oxazines: A Green Method of Synthesizing 2,3-Dehydropiperidine Enamines

Heat pyrolysis of the oxazines formed from 2-piperidineethanol produced 2,3-dehydropiperidine enamines. The same results were observed when these oxazines were irradiated with microwaves. Various 2-substituted perhydrooxazines were synthesized by allowing 2-piperidineethanol or 2-piperidinemethanol to react with aldehydes or ketones. (c) 2005 Elsevier Ltd. All rights reserved

Synthesis and Isomerization of 3-Pyrroline Enamines

3-Pyrroline reacts with cyclic ketones to form enamines as kinetically controlled products. Under more vigorous conditions, pyrroles are formed as thermodynamically controlled products by way of a 1,3- hydride shift