{"title":"使用视频点播教育目的:从三个月的实验观察","authors":"Pierre C. Bélanger, S. Clément","doi":"10.21432/T2QP59","DOIUrl":null,"url":null,"abstract":"The process for the production of 2-chloronicotinic acid from nicotinic acid-N-oxide, characterized in that the 2-chloronicotinic acid chloride is distilled off from the reaction mixture and the distillate is allowed to flow into water at a temperature of 40 DEG to 100 DEG C. The 2-chloronicotinic acid chloride is hydrolized to the 2-chloronicotinic acid, which precipitates in a pure white crystalline form.","PeriodicalId":238595,"journal":{"name":"Canadian Journal of Educational Communication","volume":"124 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1995-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Using Video-On-Demand For Educational Purposes: Observations from a Three Month Experiment\",\"authors\":\"Pierre C. Bélanger, S. Clément\",\"doi\":\"10.21432/T2QP59\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The process for the production of 2-chloronicotinic acid from nicotinic acid-N-oxide, characterized in that the 2-chloronicotinic acid chloride is distilled off from the reaction mixture and the distillate is allowed to flow into water at a temperature of 40 DEG to 100 DEG C. The 2-chloronicotinic acid chloride is hydrolized to the 2-chloronicotinic acid, which precipitates in a pure white crystalline form.\",\"PeriodicalId\":238595,\"journal\":{\"name\":\"Canadian Journal of Educational Communication\",\"volume\":\"124 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1995-01-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Canadian Journal of Educational Communication\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21432/T2QP59\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Journal of Educational Communication","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21432/T2QP59","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
摘要
由烟酸- n -氧化物生产2-氯烟酸的工艺，其特点是将2-氯烟酸氯从反应混合物中蒸馏出来，并使馏出物在40℃至100℃的温度下流入水中，2-氯烟酸氯水解成2-氯烟酸，该2-氯烟酸氯以纯白色结晶形式沉淀。
Using Video-On-Demand For Educational Purposes: Observations from a Three Month Experiment
The process for the production of 2-chloronicotinic acid from nicotinic acid-N-oxide, characterized in that the 2-chloronicotinic acid chloride is distilled off from the reaction mixture and the distillate is allowed to flow into water at a temperature of 40 DEG to 100 DEG C. The 2-chloronicotinic acid chloride is hydrolized to the 2-chloronicotinic acid, which precipitates in a pure white crystalline form.
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