The invention relates to a process for the preparaton of compounds of the formula I by reacting an alkali metal alcoholate with a compound of the formula II in the presence of an aliphatic ester such as methyl formate, and then condensing guanidine with the resulting compound of the formula III. The compound of the formula II can be prepared by reacting the corresponding benzaldehyde with acrylonitrile in the presence of diazabicyclo-2,2,2,-octane. ##STR1##
该发明涉及一种通过在存在
脂肪酸酯(如
甲酸甲酯)的情况下,将碱
金属醇盐与化合物II的反应制备出式I化合物的方法,然后将
胍与得到的式III化合物进行缩合的过程。式II化合物可通过在二氮杂
双环[2.2.2]辛烷的存在下,将对应
苯甲醛与
丙烯腈反应制备而得。