English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

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.

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