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ChemInform Abstract: Oxidative Trimerization of o-Dialkoxybenzenes to Hexaalkoxytriphenylenes: Molybdenum(V) Chloride as a Novel Reagent.

✍ Scribed by S. KUMAR; M. MANICKAM

Book ID
101860255
Publisher
John Wiley and Sons
Year
2010
Weight
37 KB
Volume
29
Category
Article
ISSN
0931-7597

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✦ Synopsis

Oxidative Trimerization of o-Dialkoxybenzenes to Hexaalkoxytriphenylenes: Molybdenum(V) Chloride as a Novel Reagent. -The title reaction proceeds efficiently with or without 0.2% acid catalyst. An increasing amount of H 2 SO 4 leads to partial dealkylation of hexaalkoxytriphenylenes, cf. product (III). MoCl 5 is also useful for the coupling of biphenyls with alkoxyphenol leading to monofunctionalized triphenylenes, e.g. (III), which are important precursors for the synthesis of discotic oligomers and polymers. -

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