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A kinetic study of the thermolysis of N-crotyl substituted 1,2,4-triazoles

✍ Scribed by Per H. J. Carlsen; Kåre B. Jørgensen

Publisher
Journal of Heterocyclic Chemistry
Year
2000
Tongue
English
Weight
291 KB
Volume
37
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

A kinetic study of the thermolysis of 4‐crotyl‐3,5‐diphenyl‐4__H__‐1,2,4‐triazole (1) in a melt of the neat compound was performed at temperatures in the range of 260–350 °C. The main products formed were 1‐crotyl‐3,5‐diphenyl‐1__H__‐1,2,4‐triazole (3) and 1‐(1‐methylallyl)‐3,5‐diphenyl‐1__H__‐1,2,4‐triazole (4) together with 3‐methyl‐2,6‐diphenylpyridine (2) and 3,5‐diphenyl‐1,2,4‐triazole (5). Products 2 and 5 were both formed preferentially from 3 and 4. In the melt was observed first order kinetics. Activation parameters for formation of 3 and 4 were determined. Product 3: E~a~ = 95 kJ/mole. Product 4: E~a~= 145 kJ/mole.

📜 SIMILAR VOLUMES

Triazoles. XIV—15N NMR study of substitu
Triazoles. XIV—15N NMR study of substituted 5-amino-1,2,4-triazoles
✍ Anita M. Orendt; Josef Michl; József Reiter 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 278 KB

N NMR chemical shifts were measured for a series of substituted 5-amino-1,2,4-triazoles. The assignment of isomeric structures agrees with earlier results obtained with the use of proton-coupled I3C NMR.