Kinetics and Mechanistic Studies of the Bromination of some Derivatives of 1,3-diaryl-2-propen-1-one | Zendy

Abdul Majeed M. Dabbagh | Zendy; Suha S. Al-Gwari | Zendy

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Kinetics and Mechanistic Studies of the Bromination of some Derivatives of 1,3-diaryl-2-propen-1-one

Author(s) -

Abdul Majeed M. Dabbagh,

Suha S. Al-Gwari

Publication year - 2013

Publication title -

mağallaẗ ʻulūm al-rāfidayn

Language(s) - English

Resource type - Journals

eISSN - 2664-2786

pISSN - 1608-9391

DOI - 10.33899/rjs.2013.67480

Subject(s) - acetophenone , benzaldehyde , chemistry , halogenation , medicinal chemistry , nitro , computational chemistry , organic chemistry , catalysis , alkyl

The rate of bromination of 1,3-diaryl -2-propen-1-one (a1) and its derivatives p-bromo acetophenone (a2), p-chloro acetophenone (a3), p-methoxy acetophenone (a4), p-nitro acetophenone (a5), p-chloro benzaldehyde (a6) and p-nitro benzaldehyde (a7) had been studied in chloroform. The study indicated first order dependence on each of reactants with ع يراوجلا دعس ىهس و غابدلا دمحم ديجملا دب 51 rates (a5 > a3 > a2 > a1 > a4 ) and (a1 > a7 > a6) at any temperature. The effect of substituents on the rate showed that electronic factors, inductive and conjugative effects play a reasonable role on the stability of the intermediates. Suggested mechanisms, which are consistent with the results have been postulated and suitable rate laws in consonance with the suggested mechanisms have been derived.

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