A mild and efficient method for the synthesis of vinylogous carbamates from alkyl azides
作者:D. Srinivasa Reddy、Trideep V. Rajale、K. Shivakumar、Javed Iqbal
DOI:10.1016/j.tetlet.2004.12.047
日期:2005.2
A mild and efficient one-pot method for the synthesis of vinylogous carbamates is reported starting from alkyl azides under a hydrogen atmosphere using 10% Pd/C. The resulting products are useful intermediates for the synthesis of heterocyclic compounds, natural products, and in peptidomimetics.
N-substituted pyrrolinones from enamines and α-dicarbonyls
作者:Esther Caballero、Pilar Puebla、María Domercq、Manuel Medarde、Jose-L. López、Arturo San Feliciano
DOI:10.1016/s0040-4020(01)85268-6
日期:1994.1
The reaction between N-substituted enamines and phenylglyoxal or glyoxal yielded Delta(2)-pyrrolin-5-ones in moderate to good yields. An uncommon pyrrolo [2,1-b]thiazole derivative was formed as a minor product when a N-(2-mercaptoethyl)enamine was used as the starting reagent. An explanation for the regiochemistry of the reaction is proposed.
Synthesis and pharmacological activities of some pyrido[2,1-b]oxazines
作者:A San Feliciano、E Caballero、P Puebla、JAP Pereira、J Gras、C Valenti