𝔖 Bobbio Scriptorium
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Addition–substitution competition in liquid-phase chlorinations

✍ Scribed by G. Coppens; G. J. Martens; M. Godfroid; J. Delvaux; J. Verbeyst

Book ID
102444946
Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
225 KB
Volume
6
Category
Article
ISSN
0538-8066

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✦ Synopsis

T h e rate constants of liquid-phase hydrogen abstraction by chlorine atoms from 1,2-CzH&12 relative to those of addition to CzHClB and to C&14 and to that of hydrogen abstraction from cyclohexane have been measured between 250 and 345°K. Assuming a zero activation energy for the addition reactions permits one to calculate the corresponding values for the liquid-phase hydrogen abstraction from the chlorinated ethanes. These values are discussed and compared with the gas-phase data.

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✍ J. Haib; D. Stahl 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 671 KB

The competition between substitution (sN2), elimination (E2) and additiorrelimination (AE) reactions in the gas phase has been studied by using OH-and NH,as nucleophiles reacting with esters of acetylenedicarboxylic acid of general formula RO(O)CCZCC(O)OR'. By selectively varying R and R' it was pos