Palladium(0)-catalyzed reaction of isoprene with water was enhanced by the presence of carbondioxide and a base to give dimethyloctadienols. The same catalyst was found to dehydrate the dimethyloctadienols to afford the corresponding dimethyloctatrienes. The effect of acidity of water on the isoprene-water reaction was also studied.
作者:Berger, Ruediger、Klimke, Lutz、Schroeder, Peter、Gaube, Walter
DOI:——
日期:——
Phenylselenoetherification of Some ?5-Alkenols in the Presence of Pyridine, Ag2O, and AgOAc as Additives
作者:Zorica M. Bugarcic、Marijana Gavrilovic
DOI:10.1007/s00706-002-0596-2
日期:2003.10.1
An improved procedure for intramolecular cyclization of some Delta(5)-alkenols using PhSex (X = Cl, Br) was developed. We found that cyclization can be facilitated in the presence of pyridine, Ag2O, and AgOAc as additives. Thus, a catalytic amount of additive influenced higher yields and equimolar amounts achieved almost quantitative yields under extremely mild experimental conditions. The effect of the halide ion of the selenylating reagent was not significant.
DZHEMILEV, U. M.;SIDOROVA, V. V.;KUNAKOVA, R. V., IZV. AN CCCP. CEP. XIM., 1983, N 3, 584-588
作者:DZHEMILEV, U. M.、SIDOROVA, V. V.、KUNAKOVA, R. V.