ORGLIST: Problem with Friedel Crafts acylation using Oxalyl chloride

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From: Bui Thanh Tuan (tuan5583$##$gmail.com)
Date: Tue Mar 04 2008 - 17:56:43 EST


Good moning everyone,

I'm currently working on the synthesis of benzils derivates by the Friedel
Crafts acylation method, using Oxalyl chloride as reagent, AlCl3 as catalyst
and CS2 as solvent (described bellow). But unfortunately, the reaction did
not run.

Ar-H + (COCl)2 + AlCl3 (cat.) + CS2 (solvent) *=>* Ar-C(=O)-C(=O)-Ar

With Ar : 3,4-Dialkoxy-Substituted Benzenes.

Is there someone having experience with this reaction and can give me some
advices, please?

Thank everybody

Tuan


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