Reaction of (–)-menthyl(S)-toluene-p-sulphinate with nitriles and lithium NN-di-isopropylamide (LDA) in 1:1:1 and 1:2:1 ratios affords optically active α-cyano- and α-cyano-β-imino-sulphoxides, respectively. α-Cyanobenzyl sulphoxide racemizes through a homolytic process in a temperature range (35–50 °C) well below that required for benzyl aryl sulphoxides.
(-)-薄荷基(S)-
甲苯-对
硫酸盐与腈和NN-
二异丙基氨基
锂(
LDA)的比例为1:1:1和1:2:1的反应可提供光学活性的α-
氰基和α -
氰基-β-亚
氨基亚砜。α-
氰基
苄基亚砜在低于35到50°C的温度范围内通过均解过程消旋,而苄基芳基亚砜则低于该温度范围。