experiments employing two symmetrical disulfides. The reaction resulted in the formation of unsymmetrical disulfides in nearly 50% yields. The steric hindrance of alkyl disulfide slowed the reaction rate, and an electron-donating group on the aryl disulfide promoted the reaction. The substituent and S-nitrosothiol effects suggested that the reaction was initialized with an oxidative process by NO+.
在存在
氧气的情况下,二
硫键被催化量的
一氧化氮裂解,这通过使用两个对称的二
硫键进行的实验得以证实。该反应导致以近50%的产率形成不对称的二
硫化物。烷基二
硫化物的空间位阻减慢了反应速度,而芳基二
硫化物上的供电子基团促进了反应。取代基和S-亚硝基
硫醇的作用表明,该反应通过NO +的氧化过程而开始。