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Structures of Diels–Alder mono-adducts of 4-phenyl- or 4-methyl-1,2,4-triazolidine-3,5-dione with 11-substituted-1,6-methano[10]annulene

✍ Scribed by Ashkenazi, P. ;Kaftory, M.

Book ID
114509952
Publisher
International Union of Crystallography
Year
1993
Tongue
English
Weight
514 KB
Volume
49
Category
Article
ISSN
0108-2701

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📜 SIMILAR VOLUMES

Propellanes. LXVI. Exo- and Endo-Diels-A
Propellanes. LXVI. Exo- and Endo-Diels-Alder adducts of 4-substituted 1,2,4-triazoline-3, 5-diones with various 1, 6-methano [10]annulenes
✍ Pnina Ashkenazi; Menachem Kaftory; David Ginsburg 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 German ⚖ 177 KB

## Abstract Relatively few __exo__‐adducts have been obtained from the title compounds. Only one such mono‐adduct, **3**, is known. Several __exo‐endo__‐bis‐adducts have been obtained but the structure of one of these, **5**, has been proved unequivocally by X‐ray structural determination.

Propellanes. LXII. The endo- and exo-add
Propellanes. LXII. The endo- and exo-adducts of 11-cyano-1,6-methano[10] annulene with 4-methyl-1,2,4-triazoline-3,5-dione
✍ P. Ashkenazi; M. Kaftory; D. Arad; Y. Apeloig; D. Ginsburg 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 German ⚖ 174 KB

## Abstract The title compounds have been isolated and their structures determined by X‐ray crystallography. Their relative stability is discussed in terms of theory and experiment. The __endo__‐adduct is the thermodynamically more stable one.