A new route to 1,2:7,8-dibenzocyclononatetraene via an electrocyclic reaction of 2,3:5,6-dibenzobicyclo[5.2.0]non-8-ene
✍ Scribed by Itamar Willner; Mordecai Rabinovitz
- Book ID
- 108382316
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- French
- Weight
- 108 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
Y= : The synthesis of the title heterocyclic propellanes is described. The cycloaddition is a so examined on the Gasis of frontier molecular orbitals (FMO) of the reacting species. Although the synthesis of several propellanes' was achieved by Diels-Alder type reactions
## Abstract Cyclization of ethyl (__E__)/(__Z__)‐[2‐(1‐cyclohexen‐1‐yl)cyclohexylidene]cyanoacetate (2) in cold concentrated sulfuric acid affords 10‐amino‐1,2,3,4,5,6,7,8‐octahydrophenanthrene‐9‐carboxylic acid (4) and 3,5,6,7,8,8a‐hexahydro‐3‐oxospiro‐[1__H__‐2‐benzopyran‐1,1′‐cyclohexane]‐4‐carb