STEREOCHEMICAL STUDY ON THE REACTION OF COBALOXIME(I) WITH 2-SUBSTITUTED CYCLOHEXYL HALIDES. EVIDENCE FOR AN ELECTRON TRANSFER MECHANISM
作者:Masami Okabe、Masaru Tada
DOI:10.1246/cl.1980.831
日期:1980.7.5
Reaction of cobaloxime (I) , (CoI)−, with 2-hydroxy- (1a and 1b) and 2-alkoxycyclohexyl halides (1c–1h) gave 2-hydroxy- and 2-alkoxycyclohexyl cobaloximes (III) (2 and 3) . Stereochemistry of the organocobaloxime was independent of the configuration of the starting halides. 2-Allyloxycyclohexyl halides (6a and 6b) gave the organocobaloxime having 9-methyl-7-oxabicyclo[4,3,0]nonane moiety. These results
Diastereocontrol by Trialkylaluminums in the Synthesis of Tetrahydrofurans via Radical Cyclization
作者:Cecilia Ericsson、Lars Engman
DOI:10.1021/ol016429s
日期:2001.11.1
[reaction: see text]. The influence of various Lewis acids in the radical cyclization of beta-allyloxyalkyl phenyl selenides was investigated. Whereas the unperturbed cyclization afforded trans-2,4-disubstituted tetrahydrofurans as the major products (cis/trans approximately 1/4.5), cyclization in the presence of trialkylaluminums (3 equiv) afforded predominantly (cis/trans approximately 7/1) the corresponding
Electrooxidative initiation of tin hydride-promoted radical chain reactions
作者:Hideo Tanaka、Hiroaki Suga、Hidenori Ogawa、A.K.M. Abdul Hai、Sigeru Torii、Anny Jutand、Christian Amatore
DOI:10.1016/s0040-4039(00)79024-1
日期:1992.10
Electrooxidative initiation of tin hydride-promoted radicalchainreactions at ambient temperature has been performed by passing 0.2–0.5 F/mol of electricity through a solution of triphenyltin hydride and substrates in THF containing Bu4NClO4.
氢化锡促进的自由基链反应在环境温度下的电氧化引发反应是通过使0.2–0.5 F / mol的电流通过氢化三苯锡和底物在含有Bu 4 NClO 4的THF中的溶液进行的。