## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
The Richter Reaction of ortho-(Alka-1,3-diynyl)aryldiazonium Salts.
β Scribed by Olga V. Vinogradova; Victor N. Sorokoumov; Sergey F. Vasilevsky; Irina A. Balova
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 37 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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cyclization 3-Alkynyl-4-halocinnolines Synthesis: pyrrolo[3,2-c]cinnolines, thieno[3,2-c]cinnoline, 3,4diethynylcinnoline a b s t r a c t Cleavage of ortho-(dodeca-1,3-diynyl)triazenes in HCl or HBr medium and subsequent cyclization of the resulting diazonium salts is investigated. In the absence of
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
1,3-Disubstituted triazenes 3 are oxidized with ten-butyl hypochlorite to N-chlorotriazenes 4, which at low temperatures with antimony pentachloride afford 1,3-diaza-2-azoniaallene salts 5 as reactive intermediates. Cations 5 undergo cycloadditions to one or both double bonds of 1,3-butadienes to fu