作者:Carole Alayrac、Francesca Cerreta、Isabelle Chapron、Florence Corbin、Patrick Metzner
DOI:10.1016/0040-4039(96)00869-6
日期:1996.6
follows a selective thiophilic course leading to stabilised dithioacetal oxide carbanions, which have been subsequently treated with electrophiles. The resulting dithioacetal oxides are readily transformed into aldehydes or spontaneously to ketones. The specificity of this “Umpolung” related chemistry is that it involves an addition reaction and not a deprotonation. Carbophilic addition has not been evidenced
通过二硫酯的氧化反应新鲜生成的可乙二酰硫已与有机锂反应。该反应遵循选择性的亲硫过程,导致稳定的二硫缩醛碳负离子,随后已用亲电子试剂对其进行处理。生成的二硫缩醛氧化物易于转化为醛或自发转化为酮。该“ Umpolung ”相关化学的特异性在于它涉及加成反应而不是去质子化。尚无亲碳添加的证据,且烯硫化作用非常有限。