The Reactions of (1-Halo-1-alkenyl)dialkylboranes with Lead(IV) Acetate or (Diacetoxyiodo)benzene. A Stereoselective Synthesis of 1-Halo-1,2-dialkylethylenes
作者:Yuzuru Masuda、Akira Arase、Akira Suzuki
DOI:10.1246/bcsj.53.1652
日期:1980.6
The reaction of (1-halo-1-alkenyl)dialkylboranes with lead(IV) acetate or (diacetoxyiodo)benzene was studied. (1-Bromo-1-alkenyl)dialkylboranes gave 1-bromo-1,2-dialkylethylenes. When alkyl groups ...
A STEREOSELECTIVE SYNTHESIS OF 1,2-DIALKYLETHENYL BROMIDES VIA MONOHYDROBORATION OF 1-BROMO-1-ALKYNES WITH DIALKYLBORANES
作者:Yuzuru Masuda、Akira Arase、Akira Suzuki
DOI:10.1246/cl.1978.665
日期:1978.7.5
Treatment of 1-bromo-1-alkenyldialkylboranes with lead(IV) acetate or iodosobenzene diacetate afforded 1-bromo-1,2-dialkylethylenes in moderate yields. Furthermore, both E-isomers and Z-isomers could be independently obtained as the main products by the use of different reaction conditions.
Reaction of [(Z)-1-bromo-1-alkenyl]dialkylboranes with N-halogeno compound in THF–DMF: a novel synthesis of 1,2-disubstituted (E)-vinyl bromides
作者:Masayuki Hoshi、Kazuya Shirakawa
DOI:10.1016/s0040-4039(00)00213-6
日期:2000.4
DMF-induced reaction of [(Z)-1-bromo-1-alkenyl]dialkylboranes with an N-halogeno compound results in 1,2-migration of an alkyl group from the dialkylboryl group to the alpha-carbon atom without elimination of the bromine atom, followed by beta-elimination to provide 1,2-disubstituted (E)-vinyl bromides stereoselectively in good yields. (C) 2000 Elsevier Science Ltd. All rights reserved.