A novel catalytic system, the complex of antimony(V) chloride (SbCl5) and benzyltriethylammonium chloride (TEBA), C6H5CH2NEt3(SbCl5)2Cl complex, is described for Friedel–Crafts acylation reactions of aromatics with acyl and sulfonyl chlorides. The catalyst has a number of useful characteristics, such as ready access, minimal toxicity, reusability, insensitivity to atmosphere and moisture, rapid acylation with high yield, and ease of operation.
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Huang et al. (2004) studied this question.
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