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Pyrolyse du Diméthylidène-2, 3-oxa-7-bicyclo[2.2.1]heptane

✍ Scribed by Pierre Vogel; Michèle Hardy

Publisher
John Wiley and Sons
Year
1974
Tongue
German
Weight
255 KB
Volume
57
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Benzocyclobutene 10 and 3‐oxabicyclo [3.2.0]hepta‐1, 4‐diene 11 are formed by gas‐phase pyrolysis of the title compound 9. The results are discussed with reference to the estimated reaction parameters. It is found that the activation due to oxygen in 9 is relatively weak in comparison to its effect on the reactivity of oxaquadricyclanes 1.

📜 SIMILAR VOLUMES

Tétraméthylidène-2, 3, 5, 6-oxa-7-bicycl
Tétraméthylidène-2, 3, 5, 6-oxa-7-bicyclo[2.2.1]heptane. (Communication préliminaire)
✍ Pierre Vogel; André Florey 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 German ⚖ 265 KB

## Abstract Preparation of the title compound (**4**) is described. An important transannular effect between the two unconjugated __s‐cis__‐butadiene chromophores is observed by comparison of the UV. spectra of the dimethylidene‐oxanorbornane **3** and the tetramethylidene‐oxanor‐bornane **4**.

Identification spectroscopique du diméth
Identification spectroscopique du diméthyl-1,2-dihydro-1,2-anthracène
✍ R. Gerdil; E. A. C. Lucken 📂 Article 📅 1961 🏛 John Wiley and Sons 🌐 German ⚖ 213 KB

Aprks une distillation fractionnbe d'un Cchantillon huileux obtenu 2 partir de la deuxieme fraction de la chromatographie (benzknc) et des crijtalli ;ations r6p&es, on a isold un hydrocarbure anthrachnigue, rest6 non identifie (VIII) : paillettes fluorescentcs, F. 126-127,5" (mdthanol). C,,H,, (290

Cyclisation du diméthyl-3,8-nonadiène-2,
Cyclisation du diméthyl-3,8-nonadiène-2,7-oïque
✍ Cl. Daesslé; H. Favre; H. Schinz 📂 Article 📅 1957 🏛 John Wiley and Sons 🌐 German ⚖ 681 KB

## Abstract 3,8‐Dimethyl‐2,7‐nonadienoic acid has been prepared. Its structure corresponds to that of geranic acid with the only difference that it contains an additional CH~2~‐group in the middle of the chain. By the action of a mixture of formic and sulfuric acids a cyclic isomer, analogous to α‐