Diels–Alder reactions. Part II. Condensation of methyl trans-β-formyl-crotonate with dienols and their acetates
作者:Barend V. Burger、Eberhard du Plessis、Christoph F. Garbers、Klaus G. R. Pachler
DOI:10.1039/p19730000584
日期:——
Methyl trans-β-formylcrotonate gave Diels–Alder adducts with 3-methylpenta-trans-2,4-dien-1-ol and 3-methyl-penta-trans-2,4-dienyl acetate. The structures of the adducts were determined by their conversion into the corresponding γ-and δ-lactones. A novel rearrangement of a trans-γ-lactone to a cis-γ-lactone is described.
甲基反式-β-formylcrotonate得到狄尔斯-阿德耳加成物与3- methylpenta-反式-2,4-二烯-1-醇和3-甲基-五-反式-2,4-二烯基乙酸酯。加合物的结构通过将其转化为相应的γ和δ内酯来确定。一的一种新颖的重排反式- γ -内酯的顺式- γ -内酯进行说明。