| PATENT CLAIMS |
Method of performing a chemical reaction between reagent & substrate involving acyl transfer mechanism comprising effecting said reaction in the presence of an imidazole-based catalyst capable of forming a transition complex with the substrate wherein the catalytic imidazole function is provided by a chemical structure element comprising an optionally substituted imidazolyl group flanked on one or both sides by a group or groups capable of stabilizing the transition complex by molecular interaction with the acyl groups
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