Method for producing 3-amino-4-substituted-5-pyrazolones
1 2 2 The invention provides a method for producing a compound represented by the following formula (II), comprising executing alkali hydrolysis of a compound represented by the following formula (I) with an alkali metal hydroxide in the presence of a barium compound to from the compound represented...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
13.02.2007
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| Online Access | Get full text |
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| Summary: | 1 2 2 The invention provides a method for producing a compound represented by the following formula (II), comprising executing alkali hydrolysis of a compound represented by the following formula (I) with an alkali metal hydroxide in the presence of a barium compound to from the compound represented by formula (II), precipitating the barium compound in the form of a barium halide, and eliminating the barium halide: wherein L represents a thiocyano group, an aryloxy group, an alkoxy group, an alkylthio group, an arylthio group, a heterocyclic thio group, an imide group, an imidazolyl group, a pyrazolyl group or a triazolyl group; Rrepresents an unsubstituted or substituted alkyl group, or an unsubstituted or substituted aryl group; Rrepresents a substituent; and n represents an integer of 0 to 5; in a case where n is 2 or larger, Rmay be the same or different. |
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