一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 4-Methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]benzoic acid
641569-94-0

4-Methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]benzoic acid synthesis

9synthesis methods
3- [(Aminoiminomethyl)amino] -4-methyl-benzoic acid methyl ester mononitrate (10 g),3-(Dimethylamino)-1-(pyridine-3-yl)prop-2-en-1-one (7.3 g), sodium hydroxide (1.7 g) was added to 1-butanol (100 mL) in a round bottom flask under nitrogen atmosphere. The reaction mass was heated to reflux temperature and stirred for 12 hours. Then the reaction mass was cooled to 25-35°C, and iN sodium hydroxide solution (1.5 g in 37 mL of DM water) was added to it throughout 20 mm. The reaction mass was heated to reflux temperature (120-125°C) and then cooled to 25-35°C. Hydrochloric acid was added to the reaction mass at 25-35°C and stirred for an hour. The material formed was filtered, washed with DM water and then dried under vacuum at 50-55°C to provide 4-Methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]benzoic acid (8.7 g).
-

Yield:-

Steps:

Multi-step reaction with 5 steps
1: sulfuric acid / 12 h / Reflux; Inert atmosphere
2: hydrogenchloride / ethanol; water / 15 h / Reflux
3: ammonium nitrate / 0.5 h / 0 °C
4: sodium hydroxide / butan-1-ol / 72 h / Reflux; Inert atmosphere
5: sodium hydroxide / ethanol; water / 4 h / 45 - 50 °C

References:

Pan, Xiaoyan;Dong, Jinyun;Gao, Hongping;Wang, Fang;Zhang, Yanmin;Wang, Sicen;Zhang, Jie [Chemical Biology and Drug Design,2014,vol. 83,# 5,p. 592 - 599]

4-Methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]benzoic acid Related Search:

竹溪县| 天长市| 连城县| 台湾省| 乐东| 怀化市| 响水县| 肥乡县| 腾冲县| 中宁县| 贵定县| 阿瓦提县| 河池市| 南丰县| 安仁县| 遂溪县| 汉中市| 河津市| 天长市| 平潭县| 上栗县| 泗水县| 揭东县| 忻城县| 新田县| 安塞县| 从江县| 盐源县| 长武县| 永城市| 富阳市| 太保市| 临泽县| 聊城市| 静乐县| 马山县| 军事| 浦北县| 张家港市| 田东县| 凭祥市|