Much attention has been given to the generation of phosphinidenes l-4 and their oxides 5-J
Photolysis of some 1-hydroxybenzimidazole-3-oxides
β Scribed by M.J. Haddadin; A.A. Hawi; M.Z. Nazer
- Book ID
- 104246310
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 101 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Although the photochemistry of some aromatic N-oxides has been thoroughly investigatedl, the photochemical reactions of benzimidazole N-oxides have received little attention. Ogata and coworkers2 reported the formation of 1,3benzylethylbensimidasolone (71%) as the major product from the irradiation of 1-benzyl-2-ethylbenzimidasole-3-oxide.
Similarly, Suschitzky and coworkers3
π SIMILAR VOLUMES
## Abstract An improved method for the preparation of the title compounds 4 is described. Thus, 1βhydroxybenzimidazole 3βoxides are obtained in high yields by the reaction of oβbenzoquinone dioxime 1 with aromatic and heteroaromatic substituted aldehydes 2 in the presence of an excess of strong aci
The photolysis of naphtho[1,8-de]-l,3-dichalcogeninylidene 1-oxide derivatives (4 and 5) at >290 nm generates ketenes together with naphtho[1,8-cd]-l,2-dichalcogenole, which were confirmed by the trapping experiments and the direct observation using IR spectroscopy. The generation of ketenes from th