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
Stereoselective Synthesis of Morpholines via Copper-Promoted Oxyamination of Alkenes
作者:Fatima C. Sequeira、Sherry R. Chemler
DOI:10.1021/ol301984b
日期:2012.9.7
A new copper(II) 2-ethylhexanoate-promoted addition of an alcohol and an amine across an alkene (oxyamination) is reported. The alcohol addition is intramolecular, while coupling with the amine occurs intermolecularly. Several 2-aminomethyl morpholines were synthesized in good to excellent yields and diastereoselectivities.
报道了一种新的 2-乙基己酸铜 (II) 促进的醇和胺在烯烃上的加成(氧胺化)。醇加成是分子内的,而与胺的偶联发生在分子间。合成了几种 2-氨基甲基吗啉,收率和非对映选择性都非常好。