Cationic cyclocodimerization. 2. Syntheses of [3.3](1,4)naphthalenophane and [3.3]paracyclo(1,4)naphthalenophane derivatives
β Scribed by Jun Nishimura; Tomohisa Okuda; Yoshihiko Mukai; Hidetoshi Hashiba; Akira Oku
- Book ID
- 104232642
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 224 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
π SIMILAR VOLUMES
1997 structure structure (organic substances) K 9000 ## 52 -033 2,13-Dithia(3)metacyclo(3)(2,3)naphthalenophane and 2,13-Dithia(3) metacyclo(3)(1,7)naphthalenophane. -Whereas title compound (I) has anti conformation, parallel ring systems and approximate mirror symmetry, its isomer (II) has perpe
The mass spectral fragmentation of 23 dithia[3.3]naphthalenophanes is discussed. The most characteristic species for these compounds are the M+ ion and ions at m/z 115,135 (or 136), 141,155 (or 154) and 185.
Two general methods are reported for the preparation of 1,2,4-triazolo[3,4-b][1,2,4]thiadiazolium salts 4 from 4-amino-2,4-dihydro-2-methyl-5-(methylthio)-3H-1,2,4-triazol-3thione (1). The first one involves the initial formation of arylidene derivatives 2 which undergo cyclization by the action of