The photodimerization of benzo-annellated acridizinium derivatives, namely naphtho[1,2-b]quinolizinium and naphtho[2,1-b]quinolizinium bromide, has been investigated in solution and in the solid state. Irradiation of the naphthoquinolizinium salts in solution gave all possible regioisomers in an uns
Regioselective Photodimerization of 9-Substituted Acridizinium Salts in the Solid State
β Scribed by Ihmels, Heiko; Leusser, Dirk; Pfeiffer, Matthias; Stalke, Dietmar
- Book ID
- 127111533
- Publisher
- American Chemical Society
- Year
- 1999
- Tongue
- English
- Weight
- 62 KB
- Volume
- 64
- Category
- Article
- ISSN
- 0022-3263
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t\_he crys\_tal chemistry of various acridizinium salts (with Br , Cl , I , ClO. , BF. , picrate and oxalate as the counter anions) have been prepar;d and\* the X-ray structures have been determined. Despite the large movement of the acridizinium ions in the [4+41 photodimerization, the majority of
Photodimerization of fumaric or several g-form trans-cinnamic acids proceeded successfully in the solid state through amine salt formation with ammonia or some aromatic heterocyclic amines (especially, imidazole). It appears that this success is due to a small size or a planar structure of the amine