heating undergoes double Cope rearrangement forming α-trimethylsiloxy nitriles 4(E)-7 and 4(Z)-7. These compounds are smoothly transformed into 3(E)- and 3(Z)-5-methyl-3,7-octanoic acid methyl esters 3(E)-8 and 3(Z)-8. The reaction sequence may be synthetically useful since it is supposed to be applicable to different substituent patterns.
2,4-
己二醛和三甲基甲
硅烷基
氰化物1的加成产物在质子化后与烯丙基
溴2(n = 1)反应生成
三烯4(n = 1),
三烯4在加热时经历两次Cope重排,形成α-三甲基甲
硅烷氧基腈4(E) - 7和4(Z) - 7。将这些化合物平稳地转化为3(E)-和3(Z)-5-甲基-3,7-
辛酸甲酯3(E)-8和3(Z)-8。该反应序列可能是合成有用的,因为它被认为可适用于不同的取代基图案。