硫是必需元素,因为它广泛存在于蛋白质中。二硫键是许多不同类型的重要有机分子中的重要部分。开发了一种新的方法,用于无氧化剂和无催化剂的S / H / S-H交叉偶联,伴随氢的释放,以构建不对称的二硫化物。在室温下未分裂细胞的条件下,通过芳基硫醇和烷基硫醇的直接偶联制备了一系列不对称的二硫键,收率高达87%。克级合成也突出了这种电化学策略的合成效用。
作者:Jaya Kishore Vandavasi、Wan-Ping Hu、Chung-Yu Chen、Jeh-Jeng Wang
DOI:10.1016/j.tet.2011.09.071
日期:2011.11
A novel way of synthesizing unsymmetrical disulfides from thiols with DDQ is presented here. This procedure ran in a straightforward manner to give high product yields. Unsymmetrical disulfides were directly synthesized from the corresponding mixture of thiols in equimolar amounts under mild conditions.
chemo-selective electrochemical oxidation of thioethers to sulfoxides and sulfones was developed. The hydrogenbonding network generated from hexafluoro-2-propanol (HFIP) and acetic acid (AcOH) plays an important role in the modulation of oxidationpotential. The hydrogenbonding network complexes strongly with the sulfoxide, making it less prone to further oxidation. Therefore, thioethers can be selectively