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Hexyl alcohol as raw materials , through the synthesis of n -hexanoic acid , 2 - pentylphenoxy imidazole , 2 - pentylphenoxy , and imidazol-1 - ethyl acetate , and finally to obtain the target product, 2 - pentylphenoxy , and imidazol-1 - acetic acid hydrazide . IR, 1HNMR and MS characterization of several products . By single factor experiment to study the reaction temperature , reaction time , ratio of raw materials , the amount of catalyst and catalyst and other factors on the reaction to obtain the optimal synthesis process . Optimize the process as follows: to a the catalyst amount 0.02:1 , the amount of cocatalyst 2.5:1 , oxygen flow 0.02m3 / h , the reaction temperature is 105 ° C and the reaction time 6.5h, n - hexanoic acid 46% yield . The material ratio 1.2:1, the amount of acid 10:1, the reaction temperature is 210 ° C and the reaction time 17H, 2 - pentyl benzimidazole in a yield of 88% . The material ratio of 1.3:1 , the reaction temperature is 70 ° C and the reaction time 50H , 2 - pentylphenoxy imidazole -1 - ethyl acetate yield was 91% . The material ratio 2:1, reaction temperature 90 ℃ and the reaction time of 8h , 2 - pentyl - benzimidazole -1 - acetohydrazide The yield was 92% .
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