The unsaturated keto ester (3) prepared from the β-ketosulfoxide (2) by the mild thermal elimination was condensed with 2-methylcyclopentane-1, 3-dione to give the trione (4), which was converted into the novel title compounds (14) and (15).
用温和的热消除法从 β-
酮亚砜(2)制备的不饱和
酮酯(3)与 2-
甲基环戊烷-1,3-二
酮缩合,得到三
酮(4),然后转化为新型标题化合物(14)和(15)。