α‐bromo ester precursors with DIBAL‐H and radical cyclization of the resulting O‐aluminum acetals, a preparative in‐situ Oppenauer‐type oxidation of the cyclic O‐aluminum acetal using simple aldehydes or ketones gives access to γ‐lactones in high yields.
白兰地放在罐子里!描述了制备γ-内酯的有效一锅法。用D
IBAL-H还原α-
溴代酯前体并将所得的O-铝
缩醛自由基环化后,使用简单的醛或酮对环状O-铝
缩醛进行原位Oppenauer型氧化制备,即可获得γ-内酯高产。