化学性质
白色或浅黄色粉末。熔点165-167℃。溶于乙醇、乙酸、无机酸及碱中,并可溶于沸水,但不溶于乙醚和冷水。
用途
该物质用作中性染料中间体,用于制造中性艳黄3GL、中性橙RL、中性深棕BRL等。此外,它还被用作染料、颜料、医药及农药中间体,并主要用于有机合成C.I.酸性橙87和88等品种的偶合组分。
生产方法
该物质由对氯苯肼与乙酰乙酰胺缩合、闭环而得。具体过程为:将对氯苯肼盐酸盐加入缩合锅中,于90-95℃下逐步加入乙酰乙酰胺,约30-40分钟后完成加料;缩合后pH值控制在2.5-3之间,反应结束后降温至45℃出料,并用水洗至中性或酸性状态后干燥即得成品。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5-Methyl-4-(1-methylethylidene)-2-(4'-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one | 108161-18-8 | C13H13ClN2O | 248.712 |
—— | 1-(p-Chlor-phenyl)-3-methyl-pyrazolidon-5 | 29425-96-5 | C10H11ClN2O | 210.663 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-(2,4-dichlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one | 14580-19-9 | C10H8Cl2N2O | 243.092 |
—— | 1-(4-chlorophenyl)-3-methyl-1H-pyrazole-4,5-dione | —— | C10H7ClN2O2 | 222.631 |
—— | 2-(1-(4-chlorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl) acetonitrile | 1498335-00-4 | C12H10ClN3O | 247.684 |
—— | 1-(4-chlorophenyl)- 4-(hydroxymethylene)-3-methyl-1H-pyrazol-5(4H)-one | 306747-05-7 | C11H9ClN2O2 | 236.658 |
—— | 1-(4-chlorophenyl)-4-((dimethylamino)methyl)-3-methyl-1H-pyrazol-5(4H)-one | 1498334-96-5 | C13H16ClN3O | 265.743 |
—— | 5-Methyl-4-(1-methylethylidene)-2-(4'-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one | 108161-18-8 | C13H13ClN2O | 248.712 |
—— | 2-(1-(4-chlorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl)acetic acid | 1152535-11-9 | C12H11ClN2O3 | 266.684 |
—— | (4Z)-1-(4-chlorophenyl)-4-((dimethylamino)methylene)-3-methyl-1H-pyrazol-5(4H)-one | —— | C13H14ClN3O | 263.727 |
—— | 1-(4-chlorophenyl)-4-((dimethylamino)methylene)-3-methyl-1H-pyrazol-5(4H)-one | 118030-33-4 | C13H14ClN3O | 263.727 |
—— | 5-Methyl-4-(1'-methyl-4'-oxopenta-2'-yl)-2-(4''-chlorophenyl)-2,4-dihydro-3H-pyrazol-3-one | 108161-22-4 | C16H19ClN2O2 | 306.792 |
—— | 1,1'-(1-(4-chlorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-4,4-diyl)bis(pentan-3-one) | 1415231-04-7 | C20H25ClN2O3 | 376.883 |
—— | 1-(4-Chlorphenyl)-4-<(4-fluorphenylamino)methylen>-3-methyl-2-pyrazolin-5-on | —— | C17H13ClFN3O | 329.761 |
—— | 4-benzylidene-3-methyl-1-(4-chlorophenyl)-1H-pyrazole-5(4H)-one | 350479-68-4 | C17H13ClN2O | 296.756 |
—— | 2-(4-Chlorophenyl)-5-methyl-4-[(4-methylphenyl)methylidene]pyrazol-3-one | —— | C18H15ClN2O | 310.783 |
—— | (4Z)-4-(4-chlorobenzylidene)-2-(4-chlorophenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one | 1198598-15-0 | C17H12Cl2N2O | 331.201 |
—— | 1-(4-Chlorphenyl)-3-methyl-4-piperidinomethylen-2-pyrazolin-5-on | —— | C16H18ClN3O | 303.791 |
—— | 2-(4-Chlorophenyl)-4-[(4-fluorophenyl)methylidene]-5-methylpyrazol-3-one | —— | C17H12ClFN2O | 314.746 |
—— | 4-[(4-Bromophenyl)methylidene]-2-(4-chlorophenyl)-5-methylpyrazol-3-one | 301654-80-8 | C17H12BrClN2O | 375.652 |
—— | 1-(4-Chlorphenyl)-3-methyl-4-morpholinomethylen-2-pyrazolin-5-on | —— | C15H16ClN3O2 | 305.764 |
—— | 2-(4-Chlorophenyl)-4-[(3-hydroxyphenyl)methylidene]-5-methylpyrazol-3-one | —— | C17H13ClN2O2 | 312.755 |
—— | 2-(4-chloro-phenyl)-4-(4-methoxy-benzylidene)-5-methyl-2,4-dihydro-pyrazol-3-one | 70733-36-7 | C18H15ClN2O2 | 326.782 |
—— | (4Z)-2-(4-chlorophenyl)-4-[(4-methoxyphenyl)methylidene]-5-methylpyrazol-3-one | —— | C18H15ClN2O2 | 326.8 |
—— | diphenyl 3,3'-(1-(4-chlorophenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-4,4-diyl)dipropanoate | 1415231-09-2 | C28H25ClN2O5 | 504.97 |
—— | 2-(4-chloro-phenyl)-5-methyl-4-thiophen-2-ylmethylene-2,4-dihydro-pyrazol-3-one | 70733-38-9 | C15H11ClN2OS | 302.784 |
—— | (4Z)-2-(4-chlorophenyl)-5-methyl-4-(thiophen-2-ylmethylidene)pyrazol-3-one | —— | C15H11ClN2OS | 302.8 |
—— | (E)-2ʹ-(4-chlorophenyl)-4ʹ-(3ʺ,5ʺ-dimethoxybenzylidene)-5ʹ-methyl-2ʹ,4ʹ-dihydro-3H-pyrazol-3ʹ-one | —— | C19H17ClN2O3 | 356.809 |
—— | 4-benzo[1,3]dioxol-5-ylmethylene-2-(4-chloro-phenyl)-5-methyl-2,4-dihydro-pyrazol-3-one | 70733-37-8 | C18H13ClN2O3 | 340.766 |
—— | (4E)-4-(1,3-benzodioxol-5-ylmethylidene)-2-(4-chlorophenyl)-5-methylpyrazol-3-one | —— | C18H13ClN2O3 | 340.8 |
A convenient and cost-effective NaOH-promoted direct sulfenylation of pyrazolones with aryl thiols has been developed under mild and metal-free conditions.