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 2-Phenylbenzoxazole
833-50-1

2-Phenylbenzoxazole synthesis

13synthesis methods
-

Yield:833-50-1 80%

Reaction Conditions:

with 1,10-Phenanthroline;palladium diacetate;caesium carbonate in dimethyl sulfoxide at 150; for 20 h;Inert atmosphere;

Steps:

1.1 General procedure of direct arylation of benzoxazole C-H bonds with iodobenzene diacetates
Gerenal procedure: Under N2, a reaction tube was charged with benzoxazole (0.2 mmol), PhI(OAc)2 (80.5 mg, 0.25 mmol), Pd(OAc)2 (2.2 mg, 5 mol %), 1,10-phenanthroline (7.9 mg, 10 mol %) and DMSO (2 mL). The mixture was stirred at 150 °C for 20 h. After the completion of the reaction, as monitored by TLC, 10 mL of ethyl acetate was added and the mixture was washed with water (3 × 5 mL). Then the organic layer was concentrated in vacuo and the residue was purified by flash column chromatography on a silica gel to give the desired product.

References:

Yu, Peng;Zhang, Guangyou;Chen, Fan;Cheng, Jiang [Tetrahedron Letters,2012,vol. 53,# 34,p. 4588 - 4590] Location in patent:supporting information; experimental part

2-Phenylbenzoxazole Related Search:

桓台县| 石城县| 遂川县| 德保县| 基隆市| 曲松县| 建平县| 南康市| 鹤壁市| 康定县| 桃园县| 玉田县| 博乐市| 哈巴河县| 芜湖县| 黔江区| 庆城县| 银川市| 西乌| 唐山市| 阿巴嘎旗| 兰西县| 怀安县| 区。| 防城港市| 湘潭县| 临安市| 洛隆县| 广丰县| 合作市| 安福县| 盐边县| 华亭县| 无为县| 宁河县| 舞钢市| 静乐县| 赣州市| 铜鼓县| 安仁县| 陇南市|