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ChemicalBook CAS DataBase List 2,3',4,4',6-Pentahydroxybenzophenone
519-34-6

2,3',4,4',6-Pentahydroxybenzophenone synthesis

5synthesis methods
Preparation by reaction of 3,4-dihydroxybenzonitrile with phloroglucinol in the presence of zinc chloride and hydrochloric acid in ethyl ether (Hoesch reaction), first at r.t. for 1 h, then at 50–60° for 4 h (37%).
-

Yield:-

Steps:

Multi-step reaction with 2 steps
1: KOH-NaOH / 1 h / 290 - 300 °C / labelled comp.
2: fused ZnCl2, dry HCl / diethyl ether / 3 h / 60 °C / labelled comp.

References:

Fujita, Masao;Inoue, Takao [Chemical and pharmaceutical bulletin,1980,vol. 28,# 8,p. 2482 - 2486]

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