BuSnCl<sub>3</sub>-Mediated Reaction of 3-(Tributylstannyl)cycloalkenes with Aldehydes. Highly<i>erythro</i>-Selective 2-Cyclopentenylation and 2-Cyclohexenylation of Aromatic Aldehydes
作者:Hideyoshi Miyake、Kimiaki Yamamura
DOI:10.1246/cl.1992.2221
日期:1992.11
3-(Butyldichlorostannyl)cyclopentene and 3-(butyldichlorostannyl)cyclohexene, which are prepared by the transmetalation of corresponding 3-(tributylstannyl)cycloalkene with BuSnCl3, react with aromatic aldehydes to give 2-cycloalkenylated products with excellent erythro-selectivity. However, the corresponding reaction with aliphatic aldehydes proceeded in only moderate erythro-selectivity.
3-(丁基二氯锡)环戊烯和 3-(丁基二氯锡)环己烯是通过相应的 3-(三丁基锡)环烯烃与 BuSnCl3 发生反金属反应制备的,它们与芳香醛反应生成 2-环烯化产物,具有极佳的赤选择性。然而,与脂肪醛的相应反应仅具有中等的赤式选择性。