The present invention relates to a process of amidation of pyrrole carboxylate compounds, including indolone-substituted pyrrole carboxylate compounds, characterized by using a cyclic alkyltriphosphonate anhydride coupling agent of formula (4) wherein A is C1-C6 alkyl group, preferably n-propyl group and to the use of the cyclic alkyltriphosphonate anhydride coupling agent of formula (4) in making pyrrole carboxamides.
                            本发明涉及一种对
吡咯羧酸酯化合物进行酰胺化的过程,包括以环状烷基三
膦酸酐
偶联剂为特征的
吲哚酮取代的
吡咯羧酸酯化合物,其中该环状烷基三
膦酸酐
偶联剂的
化学式为(4),其中A为C1-C6烷基基团,优选为正丙基基团,并且使用该环状烷基三
膦酸酐
偶联剂的
化学式(4)来制备
吡咯羧酰胺。