A process for producing a compound of formula (I): comprising a 1,4-diketone of formula (II): a primary amine of formula (III): an amine salt or an inorganic salt of an organic acid Reacting in the presence of a catalyst comprising a salt comprising: wherein R 1 and R 2 are the same or different and H; linearly or branched And may be selected from any one or more of C 1 -C 6 alkyl; C 1 -C 6 alkoxy group; substituted or unsubstituted by a halogen group, or R 1 and R 2 together, the chemical formula CR a R b , wherein R a and R b are the same or different and are selected from any one or more of C 1 to C 11 alkyl groups. ) Represents an alkylidene group, and , R 3 is selected from any one or more of C 1 -C 6 alkyl groups].
一种制备化合物(I)的方法,包括以下步骤:在催化剂的存在下,使式(II)的1,4-二酮,式(III)的一级胺,有机酸的胺盐或
无机盐发生反应,所述催化剂包括以下盐:其中,R1和R2相同或不同,且为H、直链或支链的C1-C6烷基、C1-C6烷氧基、被卤素取代或未被取代的基团;或者R1和R2在一起,表示
化学式CRaRb,其中,Ra和Rb相同或不同,且为C1-C11烷基中的任意一种或多种。其中,[表示烷基亚甲基,R3选自C1-C6烷基中的任意一种或多种。