ORGANIC TELLURIUM COMPOUND, PROCESS FOR PRODUCING THE SAME, LIVING RADICAL POLYMERIZATION INITIATOR, PROCESS FOR PRODUCING POLYMER WITH THE SAME, AND POLYMER
Generation and Trapping of Radicals Derived from Cyclobutadieneiron Tricarbonyl
作者:Jeffrey H. Byers、Stephen F. Sontum、Tina S. Dimitrova、Sumaya Huque、Benjamin M. Zegarelli、Yong Zhang、Jerry P. Jasinski、Raymond J. Butcher
DOI:10.1021/om060263n
日期:2006.7.1
Trapping products consistent with the formation of radical intermediates α to and on the ring carbon of cyclobutadieneiron tricarbonyl have been synthesized. These examples constitute the first strong experimental evidence for the formation of radicals derived from cyclobutadieneiron tricarbonyl.
Radical reactions in synthesis: carbon–carbon bond formation from 2-substituted allyl trialkyl stannanes
作者:Jack E. Baldwin、Robert M. Adlington、David J. Birch、James A. Crawford、Joseph B. Sweeney
DOI:10.1039/c39860001339
日期:——
A competing 1,3-rearrangement of allylstannanes has been demonstrated to occur under the normal thermal homolytic allyl transfer reaction conditions which limits the substitution patterns in these processes; two methacrylyl stannanes are described which allow the transfer of the methacrylyl moiety to alkyl bromides and iodides under mild conditions.
Tandem Nucleophilic Addition/Oxa-Michael Reaction for the Synthesis of<i>cis</i>-2,6-Disubstituted Tetrahydropyrans
作者:Santosh J. Gharpure、J. V. K. Prasad、Kalisankar Bera
DOI:10.1002/ejoc.201402199
日期:2014.6
A Lewis acid catalyzed tandem nucleophilic addition/oxa-Michaelreaction was developed for the synthesis of cis-2,6-disubstituted tetrahydropyran (THP) derivatives in good yields with excellent diastereoselectivities. The strategy was successfully used in the construction of THP derivatives with three stereocenters in a highly stereoselective fashion.
Unexpected nucleophilic behaviour of free-radicals generated from α-iodoketones
作者:Corinne De Dobbeleer、Jiří Pospíšil、Freija De Vleeschouwer、Frank De Proft、István E. Markó
DOI:10.1039/b901943j
日期:——
The unexpected nucleophilic reactivity of free-radicals generated from α-iodoketones is reported; two different procedures, either employing tin or the more environmentally acceptable ethylsulfone-based coupling reagent 5c have been developed.