The kinetics of bromination of a reactive substrate like anisole and a less reactive substrate like p-nitrophenol has been investigated in acetic acid medium with iodine added to accelerate the reaction. The effective catalyst has been shown to be iodine bromide. The experimental results obtained from a study of the phenomenon of catalytic maximum in these reactions are in good agreement with the theoretical expectations. © 1970 Indian Academy of Sciences.

Jayaraman Rajaram

Joseph C. Kuriacose

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

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IIT Madras

Catalysed bromination of aromatic substrates

Proceedings of the Indian Academy of Sciences - Section A

The role of pyridine (Py) in the bromination of p‐bromophenol (ArH) in CCl4 has been investigated. At constant concentrations of ArH and Br2, the rate of disappearance of Br2 increases to reach a limiting value as the concentration of Py is increased. The mechanism suggested to account for the rate expression, Rate = constant [ArH] [Br2]T[Py]T, obtained from the initial rate studies, involves the interaction between ArH and the brominating species Py. Br2, in the rate determining step. Py acts as a catalyst probably by virtue of its ability to polarise the Br‐Br bond. Copyright © 1971 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim

Israel Journal of Chemistry

Bromination of p‐Bromophenol in the Presence of Pyridine

The phenomenon of catalytic maximum has been investigated in the bromination of p-bromophenol (ArH) using iodine and anhydrous aluminium chloride as catalysts. The effective catalysts have been shown to be iodine bromide in acetic acid and carbon tetrachloride media, and AlCl3, Br2 in acetic acid. A correlation between the ratio of the reactants at the catalytic maximum, and the order in the effective catalyst has been deduced and experimentally verified. © 1969, CSIRO. All rights reserved.

Australian Journal of Chemistry

Bromination of p-bromophenol. II. Catalysis by iodine and anhydrous aluminium chloride

Who Was Who

Cornwall, Ernest, (28 Jan. 1875–30 April 1966), Director of National Provincial Bank Ltd; retd Chm., Finney’s Seeds, Ltd

Who's Who

Wilkinson, Christopher John, (born 1 July 1945), Principal (formerly Chairman), Wilkinson Eyre (formerly Chris Wilkinson) Architects Ltd, since 1989; Partner, Wilkinson Design Studios LLP, since 2012

Journal	Proceedings of the Indian Academy of Sciences - Section A
ISSN	03700089
Open Access	No