The reaction of bis(trimethylsilyl)peroxide with tlithium derivatives of sulphides and nitriles is reported to give the corresponding O-trimethylsilyl hemithioacetals and cyanohydrins. From these products the carbonyl function can be exposed in acidic media or in the presence of fluoride ions. This methodology provides an attractive route to transform a CH2-X group (X = PhS, MeS or CN) into the corresponding
据报道,双(三甲基甲
硅烷基)过氧化物与
硫化物和腈的
锂衍
生物反应生成相应的O-三甲基甲
硅烷基半
硫缩醛和
氰醇。从这些产物中,羰基官能团可以在酸性介质中或在
氟离子存在下暴露。这种方法学提供了一种有吸引力的途径,可以将CH 2 -X基团(X = PhS,MeS或CN)转化为相应的CHO,从而可以制备认为难以制备的醛,例如生成的甲酰基三甲基
硅烷并使用维蒂希反应原位捕获。