Abstract:
We have established a facile and efficient protocol for the generation of germyl radicals by employing photo-excited electron transfer (ET) in an electron donor-acceptor (EDA) complex to drive hydrogen-atom transfer (HAT) from germyl hydride (R3GeH). Using a catalytic amount of EDA complex of commercially available thiol and benzophenone derivatives, the ET-HAT cycle smoothly proceeds simply upon blue-light irradiation without any transition metal or photocatalyst. This protocol also affords silyl radical from silyl hydride.
摘要:
我们通过在电子供体-受体(EDA)络合物中采用光激发的电子转移(ET)来驱动来自苯甲氢化物(R3GeH)的氢原子转移(HAT),建立了一种简便有效的方案,用于产生苯甲酰基自由基。使用催化量的市售硫醇和二苯甲酮衍生物的EDA络合物,在没有任何过渡金属或光催化剂的情况下,仅在蓝光照射下,ET-HAT循环平稳地进行。该方案还从氢化甲硅烷基得到甲硅烷基。