Standard Article

Balsohn Alkylation

Published Online: 15 SEP 2010

DOI: 10.1002/9780470638859.conrr043

Comprehensive Organic Name Reactions and Reagents

Comprehensive Organic Name Reactions and Reagents

How to Cite

2010. Balsohn Alkylation. Comprehensive Organic Name Reactions and Reagents. 43:181–184.

Publication History

  1. Published Online: 15 SEP 2010

Chemistry Terms

Choose one or more boxes to highlight terms.

Abstract

In this reaction benzene is directly alkylated with ethylene in the presence of AlCl3. and the prolonged reaction favors a higher yield of polyethylbenzenes, including pentaethylbenzene. This reaction is referred to as Balsohn alkylation. Many other acidic catalysts have been applied to similar reactions. When sulfuric acid is used as catalyst, two other side reactions—polymerization and formation of ester—also compete with the actual alkylation. It has also been reported that the reaction is not limited to ethylene itself but works for other alkenes as well, and even for acetylene. Some of the reactions have been found to be useful for large-scale industrial production.

Keywords:

  • polyethylbenzenes;
  • pentaethylbenzene;
  • polymerization;
  • ethylene