𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The structure of 1,6:8,13-butane-1,4-diylidene[14]annulene

✍ Scribed by Gramaccioli, C. M. ;Mugnoli, A. ;Pilati, T. ;Raimondi, M. ;Simonetta, M.

Book ID
117857937
Publisher
International Union of Crystallography
Year
1972
Weight
679 KB
Volume
28
Category
Article
ISSN
0567-7408

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

1,6:8,13-Propanediylidene[14]annulene
1,6:8,13-Propanediylidene[14]annulene
✍ Prof. Dr. Emanuel Vogel; Dr. Axel Vogel; Dipl.-Chem. Hans-Klaus KΓΌbbeler; Dr. Wo πŸ“‚ Article πŸ“… 1970 πŸ› John Wiley and Sons 🌐 English βš– 350 KB
1,6:8,13-Butanediylidene[14]annulene
1,6:8,13-Butanediylidene[14]annulene
✍ Prof. Dr. Emanuel Vogel; Dr. Wolfgang Sturm; Hans-Dieter Cremer πŸ“‚ Article πŸ“… 1970 πŸ› John Wiley and Sons 🌐 English βš– 251 KB

Chemically, the aromatic character of (2) manifests itself in the formation of substitution products upon treatment of the compound with electrophilic reagents. As in syn-1,6 : 8,13 bisoxido[l4]annulene [sbl, the first substituent preferentially enters at position 2.

1,6:8,13-Diepoxy[14]annulene
1,6:8,13-Diepoxy[14]annulene
✍ Prof. E. Vogel; Dr. M. Biskup; A. Vogel; Dr. H. GΓΌnther πŸ“‚ Article πŸ“… 1966 πŸ› John Wiley and Sons 🌐 English βš– 221 KB

3b) and (4b) were obtained in a total yield of 93 % and a ratio 6:94. Replacement of the KOC(CH3)3 by the stronger base lithium piperidide altered this ratio to 60:40. This reversal, and the marked dependence of the isomer ratio on temperature, piperidine concentration, and solvent, suggest that rea