HUT55763A - Process for producing benzimidazolyl-carbamate derivatives
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Process for producing benzimidazolyl-carbamate derivatives
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Publication number
HUT55763A
HUT55763AHU370189AHU370189AHUT55763AHU T55763 AHUT55763 AHU T55763AHU 370189 AHU370189 AHU 370189AHU 370189 AHU370189 AHU 370189AHU T55763 AHUT55763 AHU T55763A
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Application filed by Chinoin Gyogyszer Es VegyeszetfiledCriticalChinoin Gyogyszer Es Vegyeszet
Priority to HU370189ApriorityCriticalpatent/HU207721B/en
Publication of HUT55763ApublicationCriticalpatent/HUT55763A/en
Publication of HU207721BpublicationCriticalpatent/HU207721B/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Novel prepn. of anthelmintic methyl (5-propyl-sulphenyl-benz-imidazole-2-yl)-carbamate of general formula (I), by the amino-imino -methane-sulphonic acid redn. of cpd. of general formula (II) in the presence of alkali-metal-hydroxide to cpd. (III). The alkali salt of this mercaptan reacts with n-propyl-bromide. The reducing agent is prepd. from thiourea and hydrogen-peroxide in the presence of water during 25-360 mins. pref. 25-60 mins. so that the temp. of the agent should be 20-70 deg.C at completion. (-pp Dwg.No.0/0)
HU370189A1989-07-211989-07-21Process for producing benzimidazolyl-carbamate derivatives
HU207721B
(en)