对溴苯甲酰肼是一种有机中间体,可通过4-溴苯甲酸甲酯与水合肼反应制备得到。据文献报道,这种化合物可用于合成1,3,4-噁二唑及其衍生物。
在250 mL三口瓶中,加入对溴苯甲酸(10.0 g,49.75 mmol)和100 mL四氢呋喃,再滴加N,N'-羰基二咪唑(10.45 g,64.68 mmol)。通过薄层层析(TLC)监测原料的反应进程,直至反应完全后,缓慢滴加80%水合肼(4.93 g,78.77 mmol),继续搅拌反应约6小时。再用TLC监测原料的反应情况(展开剂:石油醚/乙酸乙酯 1:1),确保反应彻底。之后将混合物冷却至室温,并减压浓缩除去大部分有机溶剂。加入约30 mL水,室温下进行打浆处理片刻后,抽滤、水洗,最终得到白色片状固体。
经15 mL无水乙醇重结晶后,获得了中间体3的白色固体9.09 g,收率为85%,熔点为166~167℃,与文献值一致。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
对溴苯甲醛 | 4-bromo-benzaldehyde | 1122-91-4 | C7H5BrO | 185.02 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-(4-bromobenzoyl)-2,2-dimethylhydrazine | 14908-44-2 | C9H11BrN2O | 243.103 |
—— | p-bromobenzoic acid β-benzylhydrazide | 132145-05-2 | C14H13BrN2O | 305.174 |
—— | N'-benzoyl-4-bromobenzohydrazide | 6781-60-8 | C14H11BrN2O2 | 319.158 |
—— | 4-bromo-N'-(4-bromobenzoyl)benzohydrazide | 69673-99-0 | C14H10Br2N2O2 | 398.054 |
—— | 4-bromo-N'-isopropylbenzohydrazide | 103323-57-5 | C10H13BrN2O | 257.13 |
—— | N-(1-methylethylidene)-4-bromobenzohydrazide | 103038-37-5 | C10H11BrN2O | 255.114 |
—— | 4-bromo-N'-butylbenzohydrazide | —— | C11H15BrN2O | 271.157 |
N'-乙酰基-4-溴苯甲酰肼 | N’-acetyl-4-bromobenzohydrazide | 74038-71-4 | C9H9BrN2O2 | 257.087 |
—— | 1-(p-Bromobenzoyl)-3-thiosemicarbazide | 39631-30-6 | C8H8BrN3OS | 274.141 |
—— | 4-bromo-benzoic acid heptylidenehydrazide | —— | C14H19BrN2O | 311.222 |
—— | 1-[(4-Bromobenzoyl)amino]-3-methylthiourea | —— | C9H10BrN3OS | 288.168 |
—— | benzaldehyde-4-bromobenzoylhydrazone | 82973-11-3 | C14H11BrN2O | 303.158 |
—— | 4-bromo-N’-(chloroacetyl)benzohydrazide | 199938-23-3 | C9H8BrClN2O2 | 291.532 |
—— | N'-(4-bromobenzoyl)-4-fluorobenzohydrazide | —— | C14H10BrFN2O2 | 337.148 |
—— | (E)-4-bromo-N'-(4-bromobenzylidene)benzohydrazide | —— | C14H10Br2N2O | 382.054 |
—— | 1-(p-Brombenzoyl)-2-ethoxycarbonylhydrazin | 33415-02-0 | C10H11BrN2O3 | 287.113 |
—— | 2-(4-bromobenzoyl)-N-ethylhydrazinecarbothioamide | —— | C10H12BrN3OS | 302.195 |
—— | p-bromobenzoyl azide | 14917-59-0 | C7H4BrN3O | 226.032 |
—— | N-cyclopentylidene-4-bromobenzohydrazide | 304478-28-2 | C12H13BrN2O | 281.152 |
—— | ethyl (2E)-[(4-bromobenzoyl)hydrazono]ethanoate | 1062747-43-6 | C11H11BrN2O3 | 299.124 |
—— | ethyl (2Z)-[(4-bromobenzoyl)hydrazono]ethanoate | 1062747-44-7 | C11H11BrN2O3 | 299.124 |
—— | 4-bromo-N-[(E)-3-phenylpropylideneamino]benzamide | 1323979-81-2 | C16H15BrN2O | 331.212 |
—— | 4-bromo-N’-(pyridin-4-ylmethylene)benzohydrazide | —— | C13H10BrN3O | 304.146 |
N-丙基-4-溴苯甲酰胺 | 4-bromo-N-propylbenzamide | 223557-19-5 | C10H12BrNO | 242.115 |
—— | N-cyclohexylidene-4-bromobenzohydrazide | 304478-23-7 | C13H15BrN2O | 295.179 |
—— | 4-bromo-N-[(4-chlorophenyl)methylideneamino]benzamide | 351868-99-0 | C14H10BrClN2O | 337.603 |
—— | 4-bromo-N'-(4-methoxybenzoyl)benzohydrazide | 300383-53-3 | C15H13BrN2O3 | 349.184 |
4-溴-N'-[(4-叔丁基苯基)羰基]苯甲酰肼 | 4-bromo-N'-(4-tert-butylbenzoyl)benzohydrazide | 329763-77-1 | C18H19BrN2O2 | 375.265 |
—— | 1-(p-Bromobenzoyl)-2-(p-biphenylcarbonyl)hydrazine | 100989-07-9 | C20H15BrN2O2 | 395.255 |
—— | 4-bromo-N'-(4-hydroxyphenyl)benzohydrazide | 87447-77-6 | C13H11BrN2O2 | 307.147 |
—— | 4-bromo-N'-(naphthalen-2-ylmethylene)benzohydrazide | 303214-46-2 | C18H13BrN2O | 353.218 |
—— | 4-[2-(4-Bromobenzoyl)hydrazinyl]-4-oxobut-2-enoic acid | —— | C11H9BrN2O4 | 313.107 |
—— | 4-bromo-N'-[(3-hydroxyphenyl)methylidene]benzohydrazide | 316132-68-0 | C14H11BrN2O2 | 319.158 |
对溴苯甲醛 | 4-bromo-benzaldehyde | 1122-91-4 | C7H5BrO | 185.02 |
—— | 4-bromo-N'-(thiophen-2-ylmethylidene)benzohydrazide | —— | C12H9BrN2OS | 309.186 |
—— | furfural-(4-bromo-benzoylhydrazone) | 93444-96-3 | C12H9BrN2O2 | 293.12 |
—— | 4-bromo-N-(1-phenylethylideneamino)benzamide | —— | C15H13BrN2O | 317.185 |
—— | (E)-4-bromo-N'-(2-hydroxybenzylidene)benzohydrazide | 125741-51-7 | C14H11BrN2O2 | 319.158 |
—— | 4-bromo-N′-(2-hydroxybenzylidene)benzohydrazide | —— | C14H11BrN2O2 | 319.158 |
—— | 1-(p-bromobenzoyl)-2-(p-nitrobenzoyl)hydrazine | 96237-95-5 | C14H10BrN3O4 | 364.155 |
—— | 4-bromo-N’-(pyridin-2-ylmethylene)benzohydrazide | 953386-23-7 | C13H10BrN3O | 304.146 |
—— | 4-bromo-N-[(3,4-dichlorophenyl)methylideneamino]benzamide | —— | C14H9BrCl2N2O | 372.048 |
—— | N-[(Z)-anthracen-9-ylmethylideneamino]-4-bromobenzamide | —— | C22H15BrN2O | 403.278 |
—— | N-(4-Brom-benzoyl)-N'-ethoxycarbonylmethylcarbonyl-hydrazin | 4874-95-7 | C12H13BrN2O4 | 329.15 |