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Simple and practical halogenation of arenes, alkenes and alkynes with hydrohalic acid/H2O2 (or TBHP)

✍ Scribed by Nivrutti B. Barhate; Anil S. Gajare; Radhika D. Wakharkar; Ashutosh V. Bedekar

Book ID
104209579
Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
846 KB
Volume
55
Category
Article
ISSN
0040-4020

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✦ Synopsis

A simple protocol for the halogenation of arenes utilizing a combination of aqueous hydrogen peroxide (34 %) or tert-butylhydroperoxide (70 %) and hydrohalic acid is presented. A similar procedure of oxyhalogenation involving the in situ generation of positive halogen reagents is applied for the preparation of vieinal trans-dibromoalkanes and dichloroalkanes from alkenes. The reaction of alkenes with a combination of hydrochloric acid and hydrobromic acid with hydrogen peroxide gave a mixture of 1-bromo 2-chloro alkanes and 1,2-dibromoalkanes. Oxidative bromination ofalkynes is also reported under similar conditions.

πŸ“œ SIMILAR VOLUMES

Simple and efficient chlorination and br
Simple and efficient chlorination and bromination of aromatic compounds with aqueous TBHP (or H2O2) and a hydrohalic acid
✍ Nivrutti B. Barhate; Anil S. Gajare; Radhika D. Wakharkar; Ashutosh V. Bedekar πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 French βš– 136 KB

A combination of aqueous tert-butylhydroperoxide (70%) or hydrogen peroxide (34%) and a hydrohalic acid was found effective in chlorination and bromination of aromatic compounds.