Micellar catalyzed enolization of acetone

✍ Scribed by Meenakshi Maruthamuthu; N. Lakshmikanthan

• Book ID: 102443290
• Publisher: John Wiley and Sons
• Year: 1981
• Tongue: English
• Weight: 373 KB
• Volume: 13
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550130802

✦ Synopsis

Abstract

The acid‐catalyzed enolization of acetone in the presence of bromine is found to be catalyzed by the anionic micelles of sodium dodecyl sulfate. The rate acceleration expected on the basis of lowering of activation energy is largely nullified by the decrease in the entropy of activation, leading to a very small rate enhancement, i.e., k~ψ~/k~0~ = 1.2 at 30°C. The binding constant for the micelle–substrate complex is determined. The micellar rate enhancement is the same, irrespective of the halogen used, chlorine, bromine, or iodine.