Propellanes—XLIV: Reaction of 11-substituted-1,6-methano[10]annulenes with 4-phenyl-1,2,4-triazoline-3,5-dione
✍ Scribed by P. Ashkenazi; E. Vogel; D. Ginsburg
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 290 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4020
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## Abstract Reactions of 11‐substituted‐1, 6‐methano [10]annulenes and 1, 6‐methano [10]‐annulenes substituted in the aromatic ring with the title dienophile are described.
## 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.
## 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.