Ketene thioacetal route to .gamma.-lactones. Effect of carbonyl hardness on reaction-site selectivity and a unique preparation of 3-methyl-5-phenyl-2(5H)-furanone
Addition of Carboxyalkyl Radicals to Alkenes through a Catalytic Process, Using a Mn(II)/Co(II)/O<sub>2</sub> Redox System
作者:Koji Hirase、Satoshi Sakaguchi、Yasutaka Ishii
DOI:10.1021/jo034584+
日期:2003.7.1
production of mono- and dicarboxylic acids by the addition of carboxyalkyl radicals to alkenes and dienes, respectively, was successfully developed through a catalytic process with use of Mn(II)/Co(II)/O(2) system. Thus, a variety of carboxylic acids were prepared by the reaction of alkenes and dienes with acid anhydrides in the presence of a very small amount of Mn(OAc)(2) (0.5 mol %) and Co(OAc)(2)
Free Radical Addition of 2-Bromoalkanoic Acids to Alkenes
作者:Taichi Nakano、Mikio Kayama、Yoichiro Nagai
DOI:10.1246/bcsj.60.1049
日期:1987.3
The benzoyl peroxide-catalyzed reaction of 2-bromoalkanoic acids such as bromoacetic, 2-bromopropionic, and 2-bromobutyric acid with 1-alkenes was found to proceed through the addition of the C–Br bond across the double bond followed by cyclization affording 4-alkanolides in good yields.
Ketene thioacetal route to .gamma.-lactones. Effect of carbonyl hardness on reaction-site selectivity and a unique preparation of 3-methyl-5-phenyl-2(5H)-furanone