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    • 1. 发明申请
    • PROCESSES TO PRODUCE CERTAIN 2-(PYRIDINE-3-YL)THIAZOLES
    • 生产某些2-(吡啶-3-基)噻唑的方法
    • WO2013184476A3
    • 2014-01-30
    • PCT/US2013043208
    • 2013-05-30
    • DOW AGROSCIENCES LLC
    • ROSS RONALDDEAMICIS CARLZHU YUANMINGNIYAZ NOORMOHAMED MWEST SCOTT PROTH GARYARNDT KIM E
    • C07D417/04
    • C07D417/04C07D213/83
    • The invention disclosed in this document is related to the field of processes to produce certain 2-(pyridine-3-yl)thiazoles as intermediates for the synthesis of pesticidal thiazole amides. In step a, compounds (I) and (II) are reacted to produce compound (III). The reaction is conducted in a polar protic solvent. Examples of such solvents include, but are not limited to, formic acid, n-butanol, isopropanol, n-propanol, ethanol, methanol, acetic acid, and water. In step b, compound (III) is cyclized using a dehydrating agent. Examples of such dehydrating agents include, but are not limited to, POCI3, H2S04, SOCI2, P205, polyphosphoric acid, p-toluene sulfonic acid, and trifluoroacetic anhydride. One advantage of steps a and b over the art is that compound (III) and (IV) are generally produced as substantially pure solids that do not need additional purification procedures.
    • 本文公开的发明涉及产生某些2-(吡啶-3-基)噻唑作为合成杀虫噻唑酰胺的中间体的方法领域。 在步骤a中,化合物(I)和(II)反应生成化合物(III)。 反应在极性质子溶剂中进行。 这些溶剂的实例包括但不限于甲酸,正丁醇,异丙醇,正丙醇,乙醇,甲醇,乙酸和水。 在步骤b中,使用脱水剂使化合物(III)环化。 这种脱水剂的实例包括但不限于POCI 3,H 2 SO 4,SOCl 2,P 2 O 5,多磷酸,对甲苯磺酸和三氟乙酸酐。 步骤a和b在本领域中的一个优点是,化合物(III)和(IV)通常被生产为基本上纯的固体,其不需要额外的纯化程序。
    • 7. 发明申请
    • PROCESSES TO PRODUCE CERTAIN 2-(PYRIDINE-3-YL)THIAZOLES
    • 生产某些2-(吡啶-3-基)噻唑的方法
    • WO2013184475A3
    • 2014-02-27
    • PCT/US2013043204
    • 2013-05-30
    • DOW AGROSCIENCES LLC
    • ROSS RONALDDEAMICIS CARLZHU YUANMING
    • C07D417/04
    • C07D417/04
    • The invention disclosed in this document is related to the field of processes to produce certain 2-(pyridine-3-yl)thiazoles as intermediates for the synthesis of pesticidal thiazole amides. Compounds (I) and (II) are cyclized to produce compound (III). This step is conducted in the presence of a base when compound (II) is in the form of a salt. Suitable bases include, but are not limited to, sodium bicarbonate, potassium bicarbonate, sodium carbonate, cesium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, sodium bisulfate, sodium acetate, potassium acetate, ammonium hydroxide, sodium methoxide, potassium methoxide, sodium ethoxide, potassium ethoxide, triethylamine and pyridine. The reaction can be conducted at ambient temperature and pressure, but higher or lower temperatures and pressures can be used, if desired. The reaction is conducted in a polar protic solvent. Examples of such solvents include, but are not limited to, n-butanol, isopropanol, n-propanol, ethandl, methanol, and water.
    • 本文公开的发明涉及产生某些2-(吡啶-3-基)噻唑作为合成杀虫噻唑酰胺的中间体的方法领域。 化合物(I)和(II)被环化以产生化合物(III)。 当化合物(II)为盐形式时,该步骤在碱的存在下进行。 合适的碱包括但不限于碳酸氢钠,碳酸氢钾,碳酸钠,碳酸铯,碳酸钾,氢氧化钠,氢氧化钾,硫酸氢钠,乙酸钠,乙酸钾,氢氧化铵,甲醇钠,甲醇钾, 乙醇盐,乙醇钾,三乙胺和吡啶。 反应可以在环境温度和压力下进行,但是如果需要,可以使用更高或更低的温度和压力。 反应在极性质子溶剂中进行。 这种溶剂的实例包括但不限于正丁醇,异丙醇,正丙醇,乙二醇,甲醇和水。