Method of removing dibenzofulvene and/or a dibenzofulvene amine adduct from a reaction mixture obtained by reacting an amino acid compound protected with an Fmoc group with an amine for deprotection, include stirring and partitioning the reaction mixture in a hydrocarbon solvent and a polar organic solvent, and removing a resulting hydrocarbon solvent layer in which the dibenzofulvene and/or the dibenzofulvene amine adduct is dissolved. The hydrocarbon solvent may have a carbon number of at least 5; the polar organic solvent may be free from organic amide solvents; and the polar organic solvent may immiscible with the hydrocarbon solvent.
本方法用于从通过将受到Fmoc保护的
氨基酸化合物与胺反应以进行去保护的反应混合物中去除
二苯基富烯和/或
二苯基富烯胺加合物,包括在烃溶剂和极性有机溶剂中搅拌和分配反应混合物,并去除所溶解有
二苯基富烯和/或
二苯基富烯胺加合物的所得烃溶剂层。烃溶剂的碳数可以至少为5;极性有机溶剂可以不含有机酰胺溶剂;极性有机溶剂可以与烃溶剂不相溶。