acetylenedicarboxylates by benzoic acid leads to vinyltriphenylphosphonium salts, which undergo complex reactions with cyclohexyl isocyanide to produce corresponding densely functionalized furans and imides in fairly good yields in neutral conditions. The formulas of the products were deduced from their IR, 1H NMR, and 13C NMR spectra. The reaction is completely stereoselective.
                                    苯甲酸对
三苯基膦和二烷基
乙炔二
羧酸酯反应中产生的反应性中间体进行质子化,生成
乙烯基三苯基
鏻盐,该盐与环
己基异氰化物发生复杂反应,在中性条件下以相当好的收率生成相应的密集官能化
呋喃和
酰亚胺。产物的分子式由它们的IR、1H NMR和13C NMR光谱推导出来。该反应是完全立体选择性的。