investigated. It was found that the dissociation of I occurs not only with the cis isomers, but also with the trans isomers, even in the dark. The kinetic study suggested that the trans-diazosulfides can dissociate not only through the cis form, but also directly, contrary to Zwet and Kooyman’s suggestion. The dissociation of the trans isomer of diaryldiazosulfides (II) was also discussed analogously.
研究了反式和顺式-N-芳基-S-三苯基甲基重氮
硫化物(I)与β-
萘酚在碱性
乙醇中的反应。发现 I 的解离不仅发生在顺式异构体中,而且发生在反式异构体中,即使在黑暗中也是如此。动力学研究表明反式重氮
硫化物不仅可以通过顺式形式解离,而且可以直接解离,这与 Zwet 和 Kooyman 的建议相反。也类似地讨论了二芳基重氮
硫化物 (II) 的反式异构体的解离。此外,通过在 -78°C 下的制备,分离了几种以前从未分离过的顺式二芳基重氮
硫醚。顺式-N-(对
氰基苯基)-S-(
对甲苯基)重氮
硫化物(IIf)异构化的速率常数为2.55×10-3 sec-1(0℃,
乙醇中);该值远大于 cis-I 的值。