addition of methyl 3-aminothiophene-2-carboxylate (2) as well as of β-alanine ethyl ester (11) to one CN group of the salts 1 of alkyl dicyanoacetates, followed by cyclization, yielded 1,2,3,4-tetrahydro-4-oxothieno[3,2-d]pyridimine derivatives 6–10 (Scheme 1) and perhydropyrimidine derivatives 17–19 (Scheme 2), respectively.
将3-
氨基
噻吩-2-羧酸甲酯(2)和
β-丙氨酸乙酯(11)亲核加成到二
氰基
乙酸烷基酯盐1的一个CN基团上,然后环化,得到1,2,3,4 -四氢-4-氧代
噻吩并[3,2- d ] pyridimine衍
生物6 - 10(流程1)和perhydropyrimidine衍
生物17 - 19(方案2分别地)。