New chemistry of cyclic, s-trans-enaminones: Addition of grignard reagents to enaminones derived from 2-methylcyclohexane-1,3-dione
作者:Thomas T. Shawe、Linda M. Landino、Andrew A. Ross、Anthony S. Prokopowicz、Patrice M. Robinson、Annatina Cannon
DOI:10.1016/0040-4039(96)00725-3
日期:1996.5
Grignardreagents add to cyclic s-trans enaminones to give the cycloalkenone after aqueous hydrolysis. In some cases a competitive double addition takes place. These reactions have been found to be solvent- and reagent-selective.
Addition reactions of cyclic s-trans-enaminones with Grignard reagents.
作者:Thomas T. Shawe、Darren B. Hansen、Kelly Ann Peet、Anthony S. Prokopowicz、Patrice M. Robinson、Annatina Cannon、Kathleen E. Dougherty、Andrew A. Ross、Linda M. Landino
DOI:10.1016/s0040-4020(96)01133-7
日期:1997.2
Addition of Grignardreagents to s-trans-enaminones derived from 1,3-cycloalkanediones are described. In dichloromethane, addition of phenylmagnesium bromide gave 3-phenyl substituted cycloalkenones. Alkylmagnesium halides underwent multiple additionreactions, giving mixtures of the 3-alkylcycloalkenones and 1,3-dialkyl-3-(dialkylamino)cyclohexenes. In tetrahydrofuran, only the 3-alkylcycloalkenone