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  Preparation of new cyclic quaterbenzoxazole and -imidazole derivatives

Tauer, E. (2002). Preparation of new cyclic quaterbenzoxazole and -imidazole derivatives. Synthesis-Stuttgart, (6), 723-725. Retrieved from https://www.thieme-connect.de/ejournals/pdf/synthesis/doi/10.1055/s-2002-25771.pdf.

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17060.pdf (Publisher version), 0B
 
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Tauer, E.1, Author
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Free keywords: heterocycles; cyclotetramerization; macrocycles; photodimerization
 Abstract: The new cyclic quaterbenzoxazole 5 and -imidazole 8 have been synthesized by cyclization of 3-amino-2-hydroxybenzamide (4) and the ammonium salt of 2,3-diaminobenzoic acid (7), respectively, with polyphosphoric acid. Both compounds represent a new heterocyclic nine ring system, which can be built up from four identical (or different) benzo-x-azoles in a cyclic arrangement.

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Language(s): eng - English
 Dates: 2002-05
 Publication Status: Published in print
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 Rev. Type: Peer
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Title: Synthesis-Stuttgart
Source Genre: Journal
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Pages: - Volume / Issue: (6) Sequence Number: - Start / End Page: 723 - 725 Identifier: -