Production of dialkyl acetamido-(3-indolylmethyl)-malonate
阅读：333发布：2024-01-01
专利汇可以提供Production of dialkyl acetamido-(3-indolylmethyl)-malonate专利检索，专利查询，专利分析的服务。并且，下面是Production of dialkyl acetamido-(3-indolylmethyl)-malonate专利的具体信息内容。
1. IN A METHOD WHEREIN (1) ACROLEIN IS REACTED WITH A DIALKYL ESTER OF ALPHA-ACETAMIDO-MALONIC ACID, CONTAINING FROM 1 TO 4 CARBON ATOMS IN EACH OF ITS ALKYL RADICALS, IN THE PRESENCE OF AN ALKALINE CATALYST TO FORM A CORRESPONDING DIALKYL ALPHA ACETAMIDO-(2-FORMYLETHYL) MALONATE, (2) THE LATTER IS CONDENSED WITH HENYLHYDRAZINE TO FORM A CORRESPONDING PHENYLHYDRAZONE, AND (3) SAID PHENYLHYDRAZONE IS HEATED WITH SULPHURIC ACID TO FORM A DIALKYL ALPHA ACETAMIDO-(3-INDOLYMETHYL) MALONATE, CONTAINING FROM 1 TO 4 CARBON ATOMS IN EACH ALKYL RADICAL OF THE MOLECULE, THE IMPROVEMENT WHICH CONSIST IN CARRYING OUT THE FIRST TWO OF THESE CONSECUTIVE REACTIONS IN A LIQUID NECULEAR CHLORINATED AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF AT LEAST ONE OF THE COMPOUNDS CHLOROBENZENE, ORTHO-DICHLOROBENZENE AND ORTHO-CHLOROTOLUENCE AS A REACTION MEDIUM AND ADDING, DIRECTLY TO THE RESULTANT MIXTURE, SULPHURIC THE ALKALINE CATALYST, CORRESPONDING TO FROM 1 TO 3 MOLECULAR EQUIVALENTS OF SULPHURIC ACID PER MOL OF THE DIALKYL ALIPHA ACETAMIDOMALONATE STARTING MATERIAL AND SUFFICIENT WATER TO FORM WITH THE SULPHURIC ACID AN AQUEOUS SULPHURIC ACID SOLUTION OF FROM 3 TO 15 WEIGHT PER CENT CONCENTRATION, AND HEATING THE MIXTURE THUS FORMED AT A REACTION TEMPERATUE BETWEEN 80* AND 100* C., ALL THREE OF THE REACTIONS BEING CARRIED OUT IN A LIQUID NECULEAR CHLORINATED AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTNG OF AT LEAST ONE OF THE COMPOUNDS CHLOROBENZENE, ORTHO-DICHLOROBENZENE AND ORTHO-CHLOROTOLUENE AS A REACTION MEDIUM WITHOUT ISOLATION OF THE INTERMEDIATE PRODUCTS THAT ARE FORMED.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种共轭三烯类化合物及其制备方法和应用 | 2020-05-08 | 934 |
| 制备结构色图案的方法及其制得的结构色图案和应用 | 2020-05-08 | 580 |
| 清洗方法、及半导体装置的制造方法 | 2020-05-08 | 931 |
| 蚀刻液组合物及铜钼膜层的蚀刻方法 | 2020-05-08 | 360 |
| 一种丙二酸单对硝基苄酯的高效生物合成方法 | 2020-05-08 | 423 |
| 包封方法 | 2020-05-11 | 989 |
| 一种降低汽油硫含量的方法 | 2020-05-08 | 772 |
| 一种用作橡胶填料的纳米白炭黑的改性方法 | 2020-05-08 | 907 |
| 用于制备聚丙烯组合物的方法 | 2020-05-08 | 542 |
| 1-甲基-D-色氨酸的盐和前药 | 2020-05-11 | 453 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
QQ群二维码
意见反馈
意见反馈