Synthesis and properties of 4,4,9,9-tetramethyl[12]paracyclophane-5,6,7,8-tetrone
โ Scribed by Gleiter, Rolf; Kraemer, Rolf; Irngartinger, Hermann; Bissinger, Claus
- Book ID
- 126226958
- Publisher
- American Chemical Society
- Year
- 1992
- Tongue
- English
- Weight
- 900 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0022-3263
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๐ SIMILAR VOLUMES
The fourteen-membered ring of 7,7,12,12-tetramethyl-1,4-(R,S) isomer 18a revealed a transannular interaction between the dioxaethane bridge and the dicarbonyl moiety. dioxacyclotetradecane-8,9,10,11-tetrone (4) was built up from 1,2-bis(2ะ-chloroethoxy)ethane, two units derived from Calculations (HF
In the title compound, C~20~H~25~N~3~O~5~S, the pyrrolidine ring is __trans__-fused to the dihydropyran ring. The pyrrolidine ring adopts a twist conformation and the dihydropyran ring is in an envelope conformation. The tosyl group is attached to the pyrrolidine ring in a biaxial position and its b