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METHOD OF PRODUCING 1-(2,7-DIMETHYL-2,7-OCTADIEN-1-YL)BENZIMIDAZOLE
METHOD OF PRODUCING 1-(2,7-DIMETHYL-2,7-OCTADIEN-1-YL)BENZIMIDAZOLE
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机译:制备1-(2,7-二甲基-2,7-OCTADIEN-1-YL)苯并咪唑的方法
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摘要
FIELD: chemistry.;SUBSTANCE: invention relates to a method of producing 1-(2,7-dimethyl-2,7-octadien-1-yl)benzimidazole and can be used in chemical industry. Said method of producing 1-(2,7-dimethyl-2,7-octadiene-1-yl)benzimidazole from isoprene involves allylation of benzimidazole, characterized in that isoprene is reacted with dialkylamine, such as dimethylamine, diethylamine, piperidine, morpholine, catalyzed by Pd(acac)2 – Ph3P in a THF solution, followed by quaternization of obtained N-(2,7-dimethyl-2,7-octadien-1-yl)dialkylamine with action of ethyl- or methyl iodide with formation of corresponding N-(2,7-dimethyl-2,7-octadien-1-yl)trialkylammonium iodide, which reacts to benzimidazole in the presence of K3PO4 and palladium catalyst Pd(dba)2 DMSO solution yields target 1-(2,7-dimethyl-2,7-octadien-1-yl)benzimidazole.;EFFECT: novel efficient method of producing 1-(2,7-dimethyl-2,7-octadien-1-yl)benzimidazole with high output and purity from available material, which does not require use of toxic and explosive substances.;3 cl, 4 ex
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