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3,5-二甲基吡唑

3,5-二甲基吡唑

CAS號(hào) 67-51-6
規(guī)格 1kg桶裝/25kg桶裝/200kg桶裝
純度 99%
貨號(hào) WK2025030422
貨期 1個(gè)月
品牌 為科新材料
庫存 13ton
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貨號(hào) 品牌 純度 規(guī)格 參考價(jià) 貨期
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產(chǎn)品詳情

詳細(xì)信息(中文):
3,5 - 二甲基吡唑是一種含氮雜環(huán)有機(jī)化合物,其核心結(jié)構(gòu)為吡唑環(huán)(由兩個(gè)相鄰氮原子和三個(gè)碳原子組成的五元芳香環(huán)),并在吡唑環(huán)的 3 位和 5 位碳原子上各連接一個(gè)甲基(-CH?)取代基,因此得名 “3,5 - 二甲基吡唑”。
一、基本結(jié)構(gòu)與性質(zhì)
分子結(jié)構(gòu)
化學(xué)式為 C?H?N?,分子量約為 96.13 g/mol。其結(jié)構(gòu)中,吡唑環(huán)的 1 位和 2 位為氮原子,3、4、5 位為碳原子,其中 3 位和 5 位的氫原子被甲基取代,形成對(duì)稱結(jié)構(gòu)(3 位和 5 位甲基無位置差異)。
物理性質(zhì)
通常為白色至類白色結(jié)晶性粉末或固體,具有一定的揮發(fā)性;易溶于有機(jī)溶劑(如乙醇、乙醚、丙酮等),在水中溶解度較低;熔點(diǎn)約為 106-108℃(不同純度可能略有差異),化學(xué)穩(wěn)定性較好。
化學(xué)性質(zhì)
作為吡唑類衍生物,其氮原子具有一定的堿性(可與酸成鹽),同時(shí)芳香環(huán)結(jié)構(gòu)使其可發(fā)生取代、氧化等反應(yīng);因分子中含甲基和吡唑環(huán)的極性結(jié)構(gòu),兼具疏水性和親水性片段,可與金屬離子(如銅、鋅等)形成配位化合物。
二、主要用途
化學(xué)合成中間體
用于合成醫(yī)藥、農(nóng)藥、染料等精細(xì)化學(xué)品,例如通過取代反應(yīng)制備吡唑類殺菌劑、抗炎藥物前體。
金屬離子螯合劑
因吡唑環(huán)的氮原子可與金屬離子配位,常用于金屬離子的萃取、分離,或作為催化劑配體提升反應(yīng)選擇性。
材料領(lǐng)域
可用于制備含吡唑結(jié)構(gòu)的高分子材料(如樹脂、凝膠),改善材料的熱穩(wěn)定性或配位性能。
三、安全與儲(chǔ)存
屬于一般有機(jī)化學(xué)品,避免直接接觸皮膚和吸入粉塵,操作時(shí)需佩戴防護(hù)手套和口罩。
儲(chǔ)存時(shí)需密封置于陰涼干燥處,遠(yuǎn)離火源和氧化劑,防止受潮或變質(zhì)。
綜上,3,5 - 二甲基吡唑憑借其對(duì)稱的結(jié)構(gòu)和獨(dú)特的化學(xué)性質(zhì),在有機(jī)合成、配位化學(xué)等領(lǐng)域具有重要應(yīng)用價(jià)值。

詳細(xì)信息(英文):
3,5-Dimethylpyrazole is a nitrogen-containing heterocyclic organic compound. Its core structure is a pyrazole ring (a five-membered aromatic ring consisting of two adjacent nitrogen atoms and three carbon atoms), with a methyl group (-CH?) substituent attached to each of the 3rd and 5th carbon atoms of the pyrazole ring, hence the name "3,5-dimethylpyrazole".
I. Basic Structure and Properties
Molecular Structure
The chemical formula is C?H?N?, with a molecular weight of approximately 96.13 g/mol. In its structure, the 1st and 2nd positions of the pyrazole ring are nitrogen atoms, and the 3rd, 4th, and 5th positions are carbon atoms. The hydrogen atoms at the 3rd and 5th positions are replaced by methyl groups, forming a symmetric structure (there is no positional difference between the methyl groups at the 3rd and 5th positions).
Physical Properties
It is usually a white to off-white crystalline powder or solid, with certain volatility. It is easily soluble in organic solvents (such as ethanol, ether, acetone, etc.) and has low solubility in water. The melting point is approximately 106-108°C (slight differences may occur depending on purity), and it has good chemical stability.
Chemical Properties
As a pyrazole derivative, its nitrogen atoms have certain basicity (can form salts with acids). Meanwhile, the aromatic ring structure enables it to undergo substitution, oxidation, and other reactions. Due to the molecular structure containing both methyl groups and polar pyrazole rings, it has both hydrophobic and hydrophilic segments and can form coordination compounds with metal ions (such as copper, zinc, etc.).
II. Main Uses
Chemical Synthesis Intermediate
It is used in the synthesis of fine chemicals such as pharmaceuticals, pesticides, and dyes. For example, it is used to prepare pyrazole fungicides and anti-inflammatory drug precursors through substitution reactions.
Metal Ion Chelating Agent
Because the nitrogen atoms of the pyrazole ring can coordinate with met

產(chǎn)品百科查看更多

英文名 3,5-Dimethylpyrazole
中文名 3,5-二甲基吡唑
CAS號(hào) 67-51-6 溶解性 ---
分子量 96.13040 熔點(diǎn) 105-108?°C(lit.)
密度 0,884 g/cm3 沸點(diǎn) 218?°C(lit.)

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