An acylative C(3)-C(4)-bond cleavage of 4,5-disubstituted-2-trimethylsilylmethylpenta-2,4-dienoate occurred by treatment with trifluoromethanesulfonic acid in nitriles, while a self-cyclization giving an α-methylene-γ-lactone also occurred when the reactions were carried out in bulky nitriles.
在腈类溶剂中,
三氟甲磺酸处理下会发生4,5-二取代-2-三甲基
硅甲基戊-2,4-二烯酸酯的酰化C(3)-C(4)键断裂;而在空间位阻较大的腈类溶剂中进行反应时,还会同时发生自身环化生成α-亚甲基-γ-内酯。