化学性质:白色粉末,熔点为62-64℃。
用途:主要用于医药中间体和有机合成。同时也用作医药中间体,并参与有机合成过程。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-乙氧基苯甲酸 | 2-ethoxybenzoic acid | 134-11-2 | C9H10O3 | 166.177 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 4-Phenyl-1-(2-aethoxy-benzoyl)-thiosemicarbazid | 23288-75-7 | C16H17N3O2S | 315.396 |
—— | N-[(E)-[(2E,4E)-5-(1,3-benzodioxol-5-yl)penta-2,4-dienylidene]amino]-2-ethoxybenzamide | 1443225-00-0 | C21H20N2O4 | 364.401 |
Some novel 1,2,4-triazole derivatives containing the 2,4-dinitrophenylthio group have been synthesised in high yields by means of the reactions of 3-substituted-4-amino −1 H-1,2,4-triazole-5(4 H)-thiones or ( E)-3-aryl-4-(benzylideneamino)-1 H-1,2,4-triazole-5(4 H)-thiones with 1-chloro-2,4-dinitrobenzene. The ( E)-3-aryl-4-(benzylideneamino)-1 H-1,2,4-triazole-5(4 H)-thiones were prepared by the reaction of 4-amino-3-aryl-2 H-1,2,4-triazole-3(4 H)-thiones and diverse aromatic aldehydes. The 2, 4-dinitrophenyl group linked to the S atom, not to the N atom, was confirmed by the crystal structures. The structures of all the compounds were determined by elemental analysis, IR, MS, 1H NMR and 13C NMR.
A convenient synthesis of 2,4-bis (5-aryl-1,3,4-oxdiazol-2-yl) derivatives of pyridine by the POCl3-mediated cyclo-dehydration of a variety of pyridine-2,4-dicarboxylic dihydrazides has been developed. The 20 novel intermediates and target molecules were characterised by IR, 1H NMR, MS and elemental analysis.