金属锡作用下烯丙基溴与α,β-不饱和醛、酮和醌的反应

金属锡作用下烯丙基溴与α,β-不饱和醛区域选择性加成,只生成1,2-加成产物。烯丙基卤代物和锡与1,4-醌类反应,不经分离,直接氧化可得到烯丙基取代醌类。

Reaction of allyl bromides with α,β-unsaturated aldehydes, ketones and quinones

In the presence of metallic tin, allyl bromides react with a,b-unsatd. aldehydes and ketones regioselectively to give only 1,2-addn. products. Allylquinones were obtained by the reaction of 1,4-quinones with allyl bromides and metallic tin, followed by oxidation with ferric chloride.