KR840003241A - Method for preparing hydrazinopyridazine derivatives - Google Patents

Abstract

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Description

Method for preparing hydrazinopyridazine derivatives

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Claims (3)

Wherein R ¹ is a hydrogen atom; a halogen atom; a cyano group; a red halogen atom, a lower alkoxy group, a lower alkylthio group, a lower alkanoyl amino group or a lower alkyl group which may be substituted with a tetrahydrofurfuryloxy group; a red phenyl group or a lower group A lower alkoxy group which may be substituted with an alkoxy group; a lower alkenyl group; a lower alkenyl oxy group or a lower alkynyl group, R ² may be substituted with a hydrogen atom; a halogen atom; a cyano group; an enemy halogen atom or a lower alkoxy group One lower alkyl group; lower alkoxy group or lower alkenyl group, R ³ , R ^4, and R ⁵ each independently represent a hydrogen atom; a halogen atom; a lower alkyl group or lower alkoxy group which may be substituted with an alkoxy group, and R ⁶ Represents a hydrogen atom or a methyl group, X represents a chlorine, bromine or iodine atom) A strong acid salt of a halogeno pyridazine derivative type, characterized by a switch Sikkim obtained product to an acid addition salt according to the thiourea and the reaction was then treated with hydrazine and thus requires an excessive amount or a hydrate A method for producing a hydrazinopyridazine derivative or acid addition salt thereof represented by (wherein R ¹ , R ² , R ³ , R ⁴ , R ^5, and R ⁶ represent the same meaning as electricity). expression Wherein R ¹ is a hydrogen atom; a halogen atom; a cyano group; a red halogen atom, a lower alkoxy group, a lower alkylthio group, a lower alkinoylamino group or a lower alkyl group which may be substituted with a tetrahydrofurfuryloxy group; a red phenyl group Or a lower alkoxy group which may be substituted with a lower alkoxy group; a lower alkenyl group; a lower alkenyloxy group or a lower alkynyl group, and R ² is a hydrogen atom; a halogen atom; a cyano group; an even halogen atom or a lower alkoxy group represents an alkenyl lower alkoxy or lower alkenyl, R ^3, R ⁴ and R ⁵ are each independently a hydrogen atom;; mubang a lower alkyl group, a halogen atom, may be substituted with a lower alkoxy enemy represents an bubang a lower alkyl group or lower alkoxy R ⁶ Represents a hydrogen atom or a methyl group), and the thioxopyridazine derivative represented by hydrazine or its hydration The reaction was thus expression, characterized by changing the acid addition salt the product is obtained as needed, A method for producing a hydrazino pyridazine derivative or acid addition salt thereof represented by (wherein R ¹ , R ² , R ³ , R ⁴ , R ^5, and R ⁶ represent the same meaning as electricity). expression Wherein R ¹ is a hydrogen atom; a halogen atom; a cyano group; a red halogen atom, a lower alkoxy group, a lower alkylthio group, a lower alkanoyl amino group or a lower alkyl group which may be substituted with a tetrahydrofurfuryloxy group; a red phenyl group or A lower alkoxy group which may be substituted with a lower alkoxy group; a lower alkenyl group; a lower alkenyloxy group or a lower alkynyl group, R ² is a hydrogen atom; a halogen atom; a cyano group; an optionally halogen atom or a lower alkoxy group a lower alkyl group; represents an alkenyl lower alkoxy group or lower alkenyl, R ^3, R ⁴ and R ⁵ are each independently a hydrogen atom; a halogen atom; may be substituted with a lower alkoxy enemy represents an bubang a lower alkyl group or lower alkoxy R ⁶ Represents a hydrogen atom or a methyl group), a thioxopyridazine derivative represented by Compound. ※ Note: The disclosure is based on the initial application.