The effect of polymer-supported reagent structure on bromination of organic molecules
作者:Barbara Zajc、Marko Zupan
DOI:10.1016/s0040-4020(01)87938-2
日期:1990.1
reacted with hydrogen bromide or various alkyl bromides to pyridiniumsalts, which were further converted with chlorine to polymer supported reagents () containing up to 34% of chlorine, while substantial loss of bromide was observed during chlorination, debromination being diminished with increase in the length of the alkyl chain in the pyridinium salt. Polymeric reagents () converted 1,1-diphenylethene
Bromochlorination of Alkenes with Dichlorobromate(1−) Ion. V. Regio- and Stereochemistry for the Bromochlorination of Styrene Derivatives with Dichlorobromate(1−) Ion in Protic Solvents
作者:Takeshi Negoro、Yoshitsugu Ikeda
DOI:10.1246/bcsj.59.3519
日期:1986.11
bromochlorination of styrene derivatives with tetrabutylammonium dichlorobromate(1−) (1) in such protic solvents as acetic acid and methanol gives the corresponding bromo chloro adducts along with substantial amounts of solvent-incorporated products in a regiospecific manner (regioselective in the case of 3-nitro- or 2-chlorostyrenes). The reaction of 1-phenylpropenes with 1 gives nonstereospecific but regiospecific
Bromochlorination of Alkenes with Dichlorobromate(1–) Ion. I
作者:Takeshi Negoro、Yoshitsugu Ikeda
DOI:10.1246/bcsj.57.2111
日期:1984.8
In the reaction of styrene with chlorine, the added bromide ions were mostly incorporated into the adduct, giving a bromo chloro compound. Tetrabutylammonium dichlorobromate(1–) was found to be an efficient bromochlorinating agent. The reactions of 2-butenes and stilbenes were completely anti stereospecific.