4-dimethoxybenzene)ethyl amine to yield enaminoketo ester intermediates which can be converted into benzo[a]quinolizine and indolo[2,3-a]quinolizine derivatives, respectively, in two cyclization steps. The intermediate derived from transfer of carbon fragment CH-CH2COC(SPh) (Et) COOMe to tryptamine exhibits reactions which involve nucleophilic displacement at a sulfur atom of a thio ether bond.
β,β-二取代
乙酰乙酸根的阴离子(2,CH 2 COCR 1 R 2 COOR 3 ; R 1 = R 2 = Me 2 R 1 = Et,R 2 = COOMe,R 1 = Et,R 2=
SPh)添加到1-tosyl-
3,4,4-trimethyl-Δ-imidazolinium iodide(3)得到相应的
咪唑啉(4),被认为是亚甲基四氢叶酸的模型这些模型转移了
咪唑啉的C(2) -在其碳原子上附加了
色胺和2-(3,4-二
甲氧基苯)
乙胺,得到烯
氨基
酮酸酯中间体,可以分别转化为苯并[a]
喹啉嗪和
吲哚[2,3-a]
喹啉嗪衍
生物在两个环化步骤中 从碳片段CH-CH的转移获得的中间2 COC(
SPH)(ET)COOMe到
色胺展品反应,这在一
硫代醚键的
硫原子涉及亲核置换。