Anthranol, 9,10-Dihydro

If the 9,10-dihydro-9-anthranyl carbanion were to react directly with oxygen, 9,10-dihydro-9-anthranylhydroperoxide would be formed. This could decompose to give anthrone and/or anthracene. Anthrone, which would exist mainly as anthranol in a basic medium, generally is oxidized easily to anthraquinone. The following equations illustrate this reaction. 

The excellent method for cyclizing o-benzylbenzoic acids to anthranol acetates, by heating the acid in- a mixture of acetic acid, and anhydride with zinc chloride as a catalyst,228 has been used also in the preparation of cyclic ketones of the tetralone type. In this way 7-3-acenaphthylbuty-ric acid has been cyclized in 78% yield 224 Y-2-phenanthrylbutyric acid48 and the 9,10-dihydro derivative97 in 51% and 59% yields respectively and a,j8-dimethyl-Y-2-naphthylbutyric acid in 90% yield.186... 

Dihydro- anthranol 1 Zersetzt sich an der Luft Oder durch Kochen mil Wasser Anlhracen + W dsser... 

Methoxy.benzyl]-fluoren 5, 726. 9 BeDZyl-9.10.dihydro-anthranol-(9)... 

CialliaOLO 1.5 Bichlor 9 methyl-9.10 dihydro> anthranol-(9) 6II664. 

A mixture of 9-benzylidene-lO-benzyl-9,10-dihydro-10-anthranol, 95%-formic acid, and p-toluenesulfonic acid refluxed 8 hrs. under Ng crude 1-benzyl-... 

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