摘要:
PROBLEM TO BE SOLVED: To provide a method for increasing the productivity of high-purity methacrylic acid chloride of an industrially useful compound by reducing the influence of the polymerization loss of a raw material, and effectively subjecting the raw material to a desired reaction without requiring a raw material that forms impurities whose separation is difficult and is difficult to treat.SOLUTION: The method for producing the methacrylic acid chloride includes reacting an aromatic acid chloride [molar amount: A] represented by general formula (1) (wherein, X is hydrogen, chlorine or methyl; and n is an integer of 0-2) with methacrylic acid [molar amount: B] represented by general formula (2) in a molar ratio [A/B] of 1.2-1.65 when producing the methacrylic acid chloride represented by formula (3) by reacting the aromatic acid chloride represented by formula (1) with the methacrylic acid represented by formula (2).
摘要:
PROBLEM TO BE SOLVED: To prevent the production of by-products, especially slightly separable impurities, to provide chloroethylene carbonate (CEC) suitable as an intermediate for producing vinylene carbonate (VC). SOLUTION: The method for producing the chloroethylene carbonate, comprising reacting the ethylene carbonate (EC) with chlorine gas under the irradiation of light, is characterized by diluting and mixing 1 mole of the chlorine gas with 0.2 to 2 moles of an inert gas and then introducing the mixed gas into a reaction system containing the ethylene carbonate under the irradiation of light. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing a phthalic acid dichloride compound, by which the industrially useful, highly pure phthalic acid dichloride compound can be obtained without requiring a complicated process and a special treatment, to provide zinc chloride catalyst useful therefor, and to provide a method for preparing the same. SOLUTION: There is provided the method for producing the phthalic acid dichloride compound, comprising reacting a phthalic acid anhydride compound represented by general formula (1) with a trichloromethylbenzene compound represented by general formula (2) in the presence of zinc oxide as a catalyst to produce the phthalic acid dichloride compound represented by general formula (3). In formulae (1) and (3), X is H or a halogen atom; R is one of a halogen atom, lower alkyl, and halogen-substituted lower alkyl; and (m) is an integer of 0 to 2. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To prevent the production of by-products, especially slightly separable impurities, to provide chloroethylene carbonate (CEC) suitable as an intermediate for producing vinylene carbonate (VC). SOLUTION: The method for producing the chloroethylene carbonate, comprising introducing chlorine gas into a reaction system containing ethylene carbonate (EC), and reacting the ethylene carbonate with the chlorine gas under the irradiation of light, is characterized in that a chlorine gas-introduction rate per the charged mole amount of the ethylene carbonate is 0.045 to 0.200 mol/mol×h. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a new industrial method for producing a benzo[c]heterocyclic 5-membered ring compound useful as an intermediate of an agrochemical and electronic material. SOLUTION: This method for producing the benzo[c]heterocyclic 5-membered ring compound is provided by using a halomethylbenzene compound expressed by general formula (1) [wherein, A is formyl or dihalogenomethyl; X is chlorine or bromine atom; Rs are each a halogen atom, a 1-4C alkyl, a 1-4C perfluoroalkyl, a 1-4C alkoxy, an aryl (the aryl may be substituted by the same or different halogen atom, 1-4C alkyl or 1-4C alkoxy at ≥1 site), nitro, cyano or carboxy; (n) is an integer of 0 to 4; and when (n)≥2, the Rs may be the same or different] as a starting material. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译:待解决的问题:提供一种生产用作农用化学和电子材料中间体的苯并[c]杂环五元环化合物的新工业方法。 解决方案:通过使用由通式(1)表示的卤代甲基苯化合物[其中,A是甲酰基或二卤代甲基;通式(I))表示的苯并[c]杂环5元环化合物的制备方法。 X是氯或溴原子; R 5各自为卤素原子,1-4C烷基,1-4C全氟烷基,1-4C烷氧基,芳基(芳基可被相同或不同的卤素原子取代,1-4C烷基或1-4C烷氧基 在≥1位点),硝基,氰基或羧基; (n)为0〜4的整数, 并且当(n)≥2时,Rs可以相同或不同]作为起始材料。 版权所有(C)2007,JPO&INPIT