A transition-metal-free Heck-type reaction between alkenes and alkyl iodides enabled by light in water
作者:Wenbo Liu、Lu Li、Zhengwang Chen、Chao-Jun Li
DOI:10.1039/c5ob00515a
日期:——
A transition-metal-free coupling protocol between various alkenes and non-activated alkyl iodides has been developed by using photoenergy in water for the first time. Under UV irradiation and basic aqueous conditions, various alkenes efficiently couple with a wide range of non-activated alkyl iodides. A tentative mechanism, which involves an atom transfer radical addition process, for the coupling
Room-Temperature Hiyama Cross-Couplings of Arylsilanes with Alkyl Bromides and Iodides
作者:Jae-Young Lee、Gregory C. Fu
DOI:10.1021/ja0349352
日期:2003.5.1
The first method for achieving Hiyama couplings of unactivated alkylbromides and iodides is reported. The desired carbon-carbon bond formation proceeds under mild conditions (room temperature) with good functional-group tolerance.
Hydroalkylation of styrenes enabled by boryl radical mediated halogen atom transfer
作者:Serena Pillitteri、Rajat Walia、Erik V. Van der Eycken、Upendra K. Sharma
DOI:10.1039/d4sc01731e
日期:——
present an inexpensive, stable, and easily available boryl radical source (BPh4Na) employed in a HalogenAtom Transfer (XAT) methodology. This mild and convenient strategy unlocks the use of not only alkyl iodides as radical precursors but also of the more challenging alkyl and aryl bromides to generate C-centered radicals. The generated radicals were further engaged in the anti-Markovnikov hydroalkylation