Na-exchanged X type zeolite, commercially available as MS-13X, effectively catalyzes thiol-disulfane exchange reactions under aerobic mild conditions to give the unsymmetrical disulfanes in good-to-high yields. Various thiols and disulfanes are tolerant in the catalytic systems. Preliminary mechanistic studies suggest the involvement of base-catalyzed SN2-S displacement and/or addition-elimination mechanisms
Na 交换的 X 型
沸石,作为 MS-13X 可商购,在有氧温和条件下有效催化
硫醇 - 二
硫烷交换反应,以良好到高的产率得到不对称二
硫烷。在催化系统中可以耐受各种
硫醇和二
硫烷。初步的机理研究表明,碱催化的 S N 2-S 置换和/或加成消除机制参与了氢键相互作用。