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Pharmaceutical Analysis
book

Pharmaceutical Analysis

by P. D. Chaithanya Sudha
July 2012
Intermediate to advanced
758 pages
17h 12m
English
Pearson India
Content preview from Pharmaceutical Analysis

Chapter 8

2,6-Dichloro Quinone Chloroimide (Gibb's Reagent)

INTRODUCTION

Previously, it is mainly used for the identification and estimation of phenols. It is very sensitive to phenols. Dacre has first reviewed the Gibb's reagent.

STRUCTURE

 

2,6-Dichloroquinone Chloroimide

 

2,6-Dichloroquinone Chloroimide

MECHANISM OF ACTION

The mechanism of action of the Gibb's reagent involves the solvolysis of the reagent which forms the 2,6-dichloro quinone mono imine. This reacts with para substituted phenol and it forms the adduct which is formed by the attachment of the para position of the phenol with the 2,6-dichloro quinone mono imine. Then the adduct undergoes the deprotination ...

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Publisher Resources

ISBN: 9789332515659