An Exceptional Hydroboration of Substituted Fluoroolefins Providing Tertiary Alcohols
摘要:
[GRAPHICS]A rare hydroboration-oxidation providing 3 degrees -alcohols has been achieved in the case of 1,1,2-perfluoroalkyl(MI)ethylenes. The hydroboration of substituted perfluoroalkyl(aryl)ethylenes with dichloroborane reveals that the regioselectivity does not entirely depend on the electronics of the fluoroolefins.
Regiochemical control of the catalytic asymmetric hydroboration of 1,2-diarylalkenes
作者:Antonia Black、John M. Brown、Christophe Pichon
DOI:10.1039/b508292g
日期:——
The hydroboration of stilbenes and related disubstituted alkenes catalysed by QUINAP complexes may proceed with high enantio- and regioselectivity; rhodium and iridium catalysts give the same product regioisomer but opposite enantiomers.
Benzyl bromide addition to pentafluorobenzaldehyde by Zaitsev-Barbier reaction promoted with complex systems underlain by iron pentacarbonyl
作者:A. B. Terent’ev、T. T. Vasil’eva、A. A. Ambartsumyan、O. V. Chakhovskaya、N. E. Mysova、K. A. Kochetkov
DOI:10.1134/s1070428009080119
日期:2009.8
Iron pentacarbonyl promots addition of benzylbromide to benzaldehydes by Zaitsev-Barbier reaction only in the presence of nucleophilic additives [HMPT or (S)-N-benzoyl-2-methoxycarbonylpyrrolidine].
Ionic liquids in Barbier-Zaitsev reaction. Synthesis of 1-(perfluorophenyl)-2-phenylethanol in the presence of iron pentacarbonyl
作者:T. T. Vasil’eva、A. A. Ambartsumyan、O. V. Chakhovskaya、K. A. Kochetkov
DOI:10.1134/s1070428010050040
日期:2010.5
The addition of benzyl bromide to pentafluorobenzaldehyde promoted by metal complex systems underlain by Fe(CO)(5) in the presence of a molar amount of ionic liquid led to the formation of 1-(perfluorophenyl)-2-phenylethanol in up to 60% yield.