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Determination of Diels-Alder Active Dienes with Tetracyanoethylene

✍ Scribed by Ozolins, Mara.; Schenk, G. H.

Book ID
126063200
Publisher
American Chemical Society
Year
1961
Tongue
English
Weight
560 KB
Volume
33
Category
Article
ISSN
0003-2700

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πŸ“œ SIMILAR VOLUMES

Diels-Alder Reactions of Tetradehydrodia
Diels-Alder Reactions of Tetradehydrodianthracene with Electron-Deficient Dienes
✍ Sauer, JΓΌrgen ;Breu, Josef ;Holland, Uwe ;Herges, Rainer ;Neumann, Helfried ;Kam πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 758 KB

## Abstract Theoretical calculations and simple MO considerations predict that a coplanar and spatially close arrangement of double bonds in structures such as tetradehydrodianthracene 1, should both lower the LUMO and raise the HOMO energy of the Ο€ system. Thus the reactivity in Diels‐Alder reacti

Diels-Alder Reactions of Tetradehydrodia
Diels-Alder Reactions of Tetradehydrodianthracene with Electron-Rich Dienes
✍ Kammermeier, Stefan ;Neumann, Helfried ;Hampel, Frank ;Herges, Rainer πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 547 KB

## Abstract Tetradehydrodianthracene (TDDA; 1) reacts with electronrich dienes such as butadiene, cyclopentadiene and __o__‐quinodimethane under ambient conditions. Only 1:1 products 5–8 were observed even with a large excess of the diene and under drastic conditions (though two strained and highly