192. “Regioselective 2-acylation of N-substituted pyrroles by intramolecular delivery”
     Jefford, C.W.; Tang, Q.; Boukouvalas, J.
     Tetrahedron Lett. 1990, 31, 995-998.

N-substituted pyrroles prepared from α-amino acids are converted to their mixed anhydrides by treatment with an acid chloride and base. Subsequent treatment with AlCl₃ brings about rearrangement to the corresponding 2-acyl derivatives in overall yields of 55-81%.

DOI : 10.1016/S0040-4039(00)94412-5 

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