Theoretical Insights Regarding the Cycloaddition Behavior of Push−Pull Stabilized Carbonyl Ylides
作者:M. David Weingarten、Michael Prein、Alan T. Price、James P. Snyder、Albert Padwa
DOI:10.1021/jo962184z
日期:1997.4.1
A series of diazoamido keto esters were prepared by the reaction of N-substituted 3-carbethoxy-2-piperidone with n-butylmagnesium chloride followed by the addition of ethyl 2-diazomalonyl chloride. Treatment of these diazo amides with rhodium(II) acetate afforded transient push-pull carbonylylide dipoles which could be readily trapped with electron deficient dipolarophiles. All attempts to induce