Single-Electron-Transfer Strategy for Reductive Radical Cyclization: Fe(CO)<sub>5</sub> and Phenanthroline System
作者:Joon Young Hwang、Jong Hwa Baek、Tae Il Shin、Jung Ha Shin、Jae Won Oh、Kwang Pyo Kim、Youngmin You、Eun Joo Kang
DOI:10.1021/acs.orglett.6b02375
日期:2016.10.7
electron-transfer strategy using low-valent iron pentacarbonyl [Fe(CO)5] to generate radical species from alkyl iodides was achieved. A range of pyrrolidines, tetrahydrofurans, and carbocycles were synthesized via 5-exo cyclization reactions of alkyl radical intermediates generated by electron transfer from a system involving Fe(CO)5, 1,10-phenanthroline, and diisopropylamine. Moreover, tandem addition
实现了使用低价五羰基铁[Fe(CO)5 ]从烷基碘生成自由基物种的电子转移策略。吡咯烷,四氢呋喃,和碳环的范围被通过5-合成外型通过从涉及的Fe(CO)的系统的电子转移产生烷基中间体的环化反应5,1,10-菲咯啉,和二异丙胺。此外,还探讨了与迈克尔受体的串联加成反应。光物理和电化学研究支持一种涉及电子从低价铁还原剂转移至烷基碘的机理。