Diastereo- and Regio-selective Aldol Condensation by Trapping Dienolates with Tin ... Yoshinori Yamamoto," Satoshi Hatsuya, and Jun-ichi Yamada Department of Chemistry, Faculty of Science, Tohoku University, Sendai 980, Japan ... Although the reaction of dienolate (1) with aldehydes is frequently lacking in regio- and diastereo-selectivity, the y-tin substituted derivatives (5), easily obtainable from (l), ... Despite rapid progress in aldol chemistry during the past ...
