通过2-芳基取代的嘧啶-5-基丙酸与1,2-乙二胺和1,2-苯二胺在多磷酸中的缩合反应,合成了杂环系统的新衍生物:咪唑基和苯并[4',5']咪唑并[ 1′,2′:1,6]吡啶并[2,3- d ]嘧啶。在存在等摩尔量的ZnCl 2的情况下,取代的2-巯基嘧啶5-基丙酸与1,2-苯二胺在多磷酸中的反应是通过串联机理进行的,形成了4-甲基-5,6-二氢苯并[4',5']咪唑并[1',2':1,6]吡啶[2,3 - d ]嘧啶-2-硫醇和相应的二硫键。
Synthesis of tetra- and pentaaza heterocyclic systems and benzimidazo[1,2-c]quinazoline derivatives
作者:A. A. Harutyunyan
DOI:10.1134/s1070428014010187
日期:2014.1
5,6-Dihydropyrimido[5′,4′: 5,6]pyrido[1,2-a]benzimidazole and pyrimido[4′,5′: 4,5]pyrimido[1,6-a]-benzimidazole derivatives were synthesized starting from 3-[4-hydroxy-6-methyl(hydroxy)-2-phenylpyrimidin-5-yl]propanoic and 4-hydroxy-2-phenylpyrimidine-5-carboxylic acids. New 6-sulfanyl-substituted benzimidazo-[1,2-c]quinazolines were also prepared.
Synthesis of tetra- and pentaazaheterocyclic systems and benzimidazo[1,2-c]quinazoline derivatives
作者:A. A. Arutyunyan
DOI:10.1134/s1070428014020195
日期:2014.2
Starting with 5-carboxy-4-hydroxy-2-phenylpyrimidine and 4-hydroxy-6-methyl(hydroxy)-2-phenylpyrimidinyl-5-propanoic acids derivatives of two heterocyclic systems, benzimidazopyrido- and pyrimidopyrimidine, were synthesized. Synthesis of new S-substituted benzimidazo[1,2-c]quinazolines was also carried out.