中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
5-氨基-1,3-二苯基哌唑 | 1,3-diphenyl-1H-pyrazol-5-amine | 5356-71-8 | C15H13N3 | 235.288 |
在沸腾的乙醇中,5-氨基-3-芳基-1-苯基吡唑(1a-d)与甲醛和二级胺反应,得到相应的4-烷基氨甲基衍生物(2a-f)和副产物双(4-吡唑基)甲烷(4a,b)。在室温下,与一级脂肪族和芳香族胺反应,分别得到1,3,5-三取代(5a-h)和1,3,5,7-四取代四氢吡唑并[3,4-d]嘧啶(8a-k),收率良好。同样地,5-巯基-3-苯基-1,2,4-三唑(9)与二级胺在沸腾的乙醇中,与一级芳香族胺在室温下反应,分别得到2-取代氨甲基衍生物(10a-c)和(14a-g),而与一级脂肪族胺、对甲苯胺和对甲氧基苯胺在室温下反应,与其他一级芳香族胺在沸腾的乙醇中反应,分别得到环化产物12,4-三唑并[3,4-b]噻二嗪(13a-e);(15f,g)和(15a-e)。
The reaction of 5-amino-3-aryl-1-phenylpyrazoles (1a-d) with formaldehyde and secondary amines in boiling ethanol gave the corresponding 4-alkylaminomethyl derivatives (2a-f) and bis-(4-pyrazolyl)methane (4a,b) as byproduct. Such reaction with primary aliphatic and aro matic amines at room temperature afforded 1,3,5-trisubstituted (5a-h) and 1,3.5,7-tetrasubstituted tetrahydropyrazolo[3,4-d]pyrimidines (8a-k) respectively in good yield. Similarily, the Mannich reaction of 5-mercapto-3-phenyl-1,2,4-triazole (9) with secondary amines, in boiling ethanol, and primary aromatic amines, at room temperature, gave 2 -substituted aminomethyl derivatives (10a-c) and (14a-g) respectively,while with primary aliphatic amines, p-toluidine and p-anisidine,at room temperature,and with other primary aromatic amines, in boiling ethanol, afforded the cyclized products 12,4-triazolo[3,4-b]thiadiazines (13a-e); (15f,g) and (15a-e), respectively.
在沸腾的乙醇中,5-氨基-3-芳基-1-苯基吡唑(1a-d)与甲醛和二级胺反应,得到相应的4-烷基氨甲基衍生物(2a-f)和副产物双(4-吡唑基)甲烷(4a,b)。在室温下,与一级脂肪族和芳香族胺反应,分别得到1,3,5-三取代(5a-h)和1,3,5,7-四取代四氢吡唑并[3,4-d]嘧啶(8a-k),收率良好。同样地,5-巯基-3-苯基-1,2,4-三唑(9)与二级胺在沸腾的乙醇中,与一级芳香族胺在室温下反应,分别得到2-取代氨甲基衍生物(10a-c)和(14a-g),而与一级脂肪族胺、对甲苯胺和对甲氧基苯胺在室温下反应,与其他一级芳香族胺在沸腾的乙醇中反应,分别得到环化产物12,4-三唑并[3,4-b]噻二嗪(13a-e);(15f,g)和(15a-e)。