AlMe<sub>3</sub>-Mediated Regio- and Chemoselective Reactions of Indole with Carbamoyl Electrophiles
作者:A. Velavan、S. Sumathi、K. K. Balasubramanian
DOI:10.1002/ejoc.201300085
日期:2013.5
we report the regio- and chemoselectivereactions of indole with carbamoylelectrophiles in presence of AlMe3. Indole-3-carboxamide was prepared in one-step from a reaction of indole with tertiary carbamoylimidazole in the presence AlMe3. Under conditions for the formation of an aluminium ate complex, the reaction was diverted to the indole nitrogen. Secondary carbamoylelectrophiles in the presence
Upon irradiation with visiblelight and sensitization with thioxanthen-9-one (TXT), substituted indoles undergo a facile and high-yielding hydrogenatom transfer/cyclizationcascade to dearomatized, spirocyclic products.