Regio- and stereoselective hydrostannation of allenes using dibutyliodotin hydride (Bu2SnIH) and successive coupling with aromatic halides
作者:Naoki Hayashi、Kazunao Kusano、Shingo Sekizawa、Ikuya Shibata、Makoto Yasuda、Akio Baba
DOI:10.1039/b712998j
日期:——
Regio- and stereoselective hydrostannation of allenes by using di-n-butyliodotin hydride (Bu2SnIH) was accomplished to give α,β-disubstituted vinyltins, which induced the synthesis of multi-substituted alkenes in a one-pot procedure.
Cobalt-catalysed synthesis of highly substituted styrene derivatives via arylzincation of alkynes
作者:Martin Corpet、Corinne Gosmini
DOI:10.1039/c2cc36676b
日期:——
A new two-step procedure was developed by carbozincation of internal and terminal alkynes to synthesise highly functionalised vinylzinc bromides. Various tri and tetrasubstituted alkenes were prepared in moderate to good yields under mild reaction conditions in a stereo-selective manner. This methodology represents an interesting alternative to previously known methods.
Some unusual aspect aspects of organocopper chemistry: lithium organocuprate reaction with some neopentylic p-tosylate esters
作者:Gary H. Posner、Kevin A. Babiak
DOI:10.1016/s0022-328x(00)92356-8
日期:1979.9
Diphenylcopperlithium and dimethylcopperlithium react differently with the same primary neopentylic tosylate ester. Several secondary neopentylic tosylates react with organocopperlithium reagents to give olefins via a concerted anti-1,2-dehydrosulfonation. When anti-elimination is not possible, skeletal rearrangement occurs.