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外観
白色～ほとんど白色, 結晶～結晶性粉末
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溶解性
水に溶ける。
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用途
相間移動触媒、4級アンモニウム陽イオン活性剤。
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使用上の注意
吸湿しやすいので、使用後は直ちに栓又は封をして下さい。
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説明
Benzyltrimethylammonium chloride is hygroscopic and soluble in water, ethanol, and butanol and slightly soluble in butyl phthalate and tributyl phosphate. It is widely used as a solvent for cellulose, a gelling inhibitor in polyester resins, a chemical intermediate, a paint dispersant, and an acrylic dyeing agent. It is also used in plant growth regulator compositions and synthetic processes.
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化学的特性
white to light yellow crystal powder. soluble in water, aqueous solutions conduct electricity. It is hydrochloride salt of benzyltriethylammonium which acts as a phase-transfer catalyst in chemical reactions.
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使用
Benzyltriethylammonium chloride is used as a catalyst in the preparation of 2-phenylbutyronitrile from phenyl acetonitrile. It is involved in the Knoevenagel condensation of carbonyl compounds with active methylene compounds to give olefinic products. It acts as a phase transfer catalyst used in the alkylation reaction. It reacts with 1H-Pyridine-2-thione to get 2-Benzylsulfanyl-pyridine.
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製造方法
Benzyltriethylammonium chloride synthesis: Add benzyl chloride, triethylamine and acetone into the reaction pot, and reflux at 63-64°C for 8 hours. Slowly lowered to 15°C, filtered, and the filter cake was washed with acetone and dried to obtain benzyltriethylammonium chloride. Yield 68.9%.
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主な応用
Benzyltriethylammonium chloride is a lipophilic phase-transfer catalyst that can be used in phase-transfer catalysis (PTC) to catalyze polycondensation reactions to form high molecular weight polymers under bi-phasic conditions.
It can also be used:
To activate hydroxyapatite and natural phosphate for use as a solid support for Knoevenagel condensation and Claisen-Schmidt condensation, respectively at room temperature and in the absence of a solvent.
To increase the efficiency of mCPBA oxidation of sulfonimine generated from arenesulfonamide and diethyl acetal of an aromatic aldehyde to form 2-sulfonyloxaziridines.
In combination with antimony(V) chloride to form a catalytic system for the Friedel-Crafts acylation reactions of arenes with acyl and sulfonyl chlorides.
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安全性プロファイル
Poison by intravenous route.When heated to decomposition it emits toxic vapors ofNOx and Cl.
