2-(PYRAZOLYL-(1))-BENZIMIDAZOLE FUNGICIDAL,AND BACTERICIDAL AGENTS

1334348 Pyrazolyl-benzimidazoles BAYER AG 16 June 1972 [18 June 1971] 28341/72 Heading C2C [Also in Division A5] 1 - n - Butyl - 2 - [pyrazolyl - (11)] - benzimidazole is prepared by heating n-butyl bromide with the reaction product of 2-[pyrazolyl-(11)]-benzimidazole and sodium methylate. 2 - [Pyra...

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Bibliographic Details
Main Authors GREWE F,DT, GAUSS W,DT, SCHEINPFLUG H,DT
Format Patent
LanguageEnglish
Published 01.10.1974
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:1334348 Pyrazolyl-benzimidazoles BAYER AG 16 June 1972 [18 June 1971] 28341/72 Heading C2C [Also in Division A5] 1 - n - Butyl - 2 - [pyrazolyl - (11)] - benzimidazole is prepared by heating n-butyl bromide with the reaction product of 2-[pyrazolyl-(11)]-benzimidazole and sodium methylate. 2 - [Pyrazolyl - (11)] - 5 - n - butylbenzimidazole is prepared by reacting 5-n-butylbenzimidazole- 2-sulphonic acid with hydrazine hydrate to form 2 - hydrazino - 5 - n - butylbenzimidazole which is then heated in hydrochloric acid + methanol + 1,1,3,3-tetramethoxypropane. 1 - methoxycarbonyl - 2 - [pyrazolyl - (11)]- benzimidazole is prepared by heating chloroformic acid methyl ester with the reaction product of 2-[pyrazolyl- (11)]-benzimidazole and sodium methylate.
Bibliography:Application Number: US19720261829