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1, 4-Cycloaddition of 4-Phenyl-l, 2, 4-Triazoline-3,5-Dione to 2-Vinylpyridines

✍ Scribed by P. B. Terent′ev; A. N. Kost; V. G. Kartsev

Book ID
112325159
Publisher
Springer US
Year
1976
Tongue
English
Weight
252 KB
Volume
12
Category
Article
ISSN
0009-3122

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📜 SIMILAR VOLUMES

Solvent Effects in [4+2] Cycloadditions
Solvent Effects in [4+2] Cycloadditions of Polyhalogenated Cyclopentadienes with 4-Phenyl-1,2,4-triazoline-3,5-dione
✍ Sauer, Jürgen ;Schuhbauer, Hans Markus 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 497 KB

## Abstract Relative rates of [4 + 2] cycloadditions of cyclopentadienes 1a–1e with 4‐phenyl‐1,2,4‐triazoline‐3,5‐dione (2) in 12 different solvents vary by factors of up to 19000, but the reactions show similar solvent effects. Rate constants __k__~2~ correlate well with solvent parameters __AN__

4-Phenyl-1,2,4-triazolin-3,5-dione: a po
4-Phenyl-1,2,4-triazolin-3,5-dione: a powerful dienophile
✍ R.C. Cookson; S.S.H. Gilani; I.D.R. Stevens 📂 Article 📅 1962 🏛 Elsevier Science 🌐 French ⚖ 149 KB

DIENOPHILIC reactivity rises in the series fumaric acid, maleic acid, maleic anhydride' and the well recognized dienophilic properties of azodicarboxylic ester2 place it last in this series ahead of maleic anhydride. However, it fails to react (or reacts by allylic addition) with some dienes with wh

[4+2] Cycloaddition of 2(1H)-pyrazinones
[4+2] Cycloaddition of 2(1H)-pyrazinones and 1,2,4-triazoline-3,5-diones
✍ Takehiko Nishio 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 273 KB

## Abstract The reaction of 2(1__H__)‐pyrazinones 1 and 1,2,4‐triazoline‐3,5‐diones 3 was investigated by comparing that of 1 with singlet oxygen. 2(1__H__)‐Pyrazinones 1 reacted in Diels‐Alder fashion with 1,2,4‐triazoline‐3,5‐diones 3 to afford [4+2]‐adducts 4–17 in high yields.

Cycloaddition reactions of substituted v
Cycloaddition reactions of substituted vinylcyclopropanes with 4-phenyl-1,2,4-triazoline-3,5-dione and chlorosulfonylisocyanate
✍ Daniel J. Pasto; A. Fu-Tai Chen 📂 Article 📅 1973 🏛 Elsevier Science 🌐 French ⚖ 195 KB

In a continuing study of cycloaddition reactions involving cyclopropane ring-containing systems (1) we have investigated the reactions of vinylcyclopropane and some substituted vinylcyclopropanes with 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD) and chlorosulfonylisocyanate (CSI).