赵锴锴,杜学军,李振兴,王艳利.N,N′-二邻甲苯基硫脲的合成工艺研究[J].橡胶科技,2023,21(2):0090-0093. |
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N,N′-二邻甲苯基硫脲的合成工艺研究 |
Study on Synthesis Process of Di-o-tolylthiourea |
投稿时间:2022-03-11 修订日期:2022-03-11 |
DOI:10.12137/j.issn.2095-5448.2023.02.0090 |
中文关键词: N,N′-二邻甲苯基硫脲 邻甲苯胺 二硫化碳 催化剂 合成工艺 |
英文关键词: di-o-tolylthiourea o-toluidine carbon disulfide catalyst synthetic process |
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中文摘要: |
研究N,N′-二邻甲苯基硫脲的合成工艺。以邻甲苯胺、二硫化碳为原料,水为溶剂,加入催化剂A,在一定的温度下反应生成N,N′-二邻甲苯基硫脲,确定的最佳合成工艺条件为:邻甲苯胺/二硫化碳物质的量比为1/1.5,催化剂A/邻甲苯胺质量比为3.33/1 000;反应温度为第1阶段 48~50 ℃,第2阶段 60~65 ℃,第3阶段 95~100 ℃;反应时间为第1阶段 3 h,第2阶段 8 h,第3阶段 6 h。 |
英文摘要: |
The synthetic process of di-o-tolylthiourea was studied.Di-o-tolylthiourea was synthesized at a certain temperature with o-toluidine and carbon disulfide as raw materials,water as solvent and catalyst A.The optimum synthesis conditions were as follows:the molar ration of o-toluidine/carbon disulfide was 1/1.5,the mass ratio of catalyst A/o-toluidine was 3.33/1 000;the reaction temperature was 48~50 ℃ in the first stage,60~65 ℃ in the second stage,95~100 ℃ in the third stage;the reaction time was 3 hours in the first stage,8 hours in the second stage,6 hours in the third stage. |
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