tributyltin hydride in the Barton–McCombie deoxygenation of alcohols via their xanthates under mild conditions. Reduction of xanthates by silanes can produce COS as a by-product, leading to the in situ formation of silanethiol that will then act as a protic polarity-reversal catalyst for the reduction.
羰基硫在自由基
引发剂的存在下,在60-85°C下与有机
硅烷反应,生成相应的
硅烷硫醇。在温和条件下,通过其黄药生成的Barton–McCombie醇进行脱氧,三苯基
硅烷被证明是氢化三
丁基锡的极佳替代品。
硅烷还原黄原酸酯可产生副产物COS,从而导致原位形成
硅烷硫醇,然后将其用作质子极性反转催化剂进行还原。