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 3-Bromo-4-fluorophenol
27407-11-0

3-Bromo-4-fluorophenol synthesis

3synthesis methods
-

Yield:-

Reaction Conditions:

Stage #1: (3-bromo-4-fluorophenyl) acetatewith sodium hydroxide in ethanol;water; for 20 h;
Stage #2:
Stage #3: with hydrogenchloride in ethanol;water;

Steps:

25.2

Step 2: To the product of Step 1 (2.05 g, 8.8 mmol) in EtOH (20 ml) add 1N NaOH (17.5 ml). Stir 20 h, neutralize with 1N HCl, concentrate, and partition with CH2Cl2 and water. Wash with brine, dry (MgSO4) and concentrate to obtain the phenol as a yellow oil

References:

US2004/220194,2004,A1 Location in patent:Page 19; 20

3-Bromo-4-fluorophenol Related Search:

丹东市| 莆田市| 建水县| 察隅县| 阿鲁科尔沁旗| 奉节县| 阿拉善盟| 九龙县| 西昌市| 大庆市| 舒兰市| 潍坊市| 六安市| 绥芬河市| 德阳市| 祁东县| 名山县| 尖扎县| 宁陕县| 扶沟县| 含山县| 万源市| 胶南市| 石河子市| 通江县| 太仆寺旗| 大关县| 阜平县| 内黄县| 丹东市| 湘乡市| 安宁市| 报价| 新蔡县| 广昌县| 麟游县| 涿州市| 芮城县| 津南区| 韩城市| 张家界市|