In the presence of charge-transfer complexes between iodine and tertiary amines, the aqueous-medium atom-transfer radical reactions proceeded under visible light irradiation without the typical photocatalysts.
A mild procedure for the trimethylaluminum-induced addition of polyhalomethane to olefins has been described.
已经描述了用于将多卤甲烷添加到烯烃中的三甲基铝诱导的温和程序。
Study of Rhodamine‐Based Fluorescent Probes for Organic Radical Intermediates
作者:Jiaxin He、Boyu Yan、Jiangtao Meng、Maogang Ran、Yutong Zhou、Jinfei Deng、Chao‐Jun Li、Qiuli Yao
DOI:10.1002/ejoc.202100299
日期:2021.8.6
Rhodamine-based amide derivatives were used as fluorescent probes in the detection and real-time monitoring of radical intermediates in different solvents. Mechanism studies reveal a reversible opening and closing of the spirolactam ring with the presence or absence of radicals.
Ruthenium(<scp>II</scp>)- and rhenium(<scp>III</scp>)-catalysed addition of tetrahalogenomethanes to alkenes and 1,ω-dienes. Stereoselective formation of cis-1,2-disubstituted cyclopentanes from 1,6-dienes
作者:Ronald Grigg、John Devlin、Ashok Ramasubbu、Ronald M. Scott、Paul Stevenson
DOI:10.1039/p19870001515
日期:——
Acetonitrile(trichloro)bis(triphenylphosphine)rhenium(III) is found to act as an initiator for the addition of carbon tetrachloride and bromotrichloromethane to terminal alkenes and dienes. Moderate to good yields of mono- and bis-adducts are obtained. 1,6-Dienes undergo a stereoselective addition-cyclization process with both the ReIII catalyst and with dichlorotris(triphenylphosphine)ruthenium (II) to give mixtures