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 DIPHENYL METHYLPHOSPHONATE
7526-26-3

DIPHENYL METHYLPHOSPHONATE synthesis

11synthesis methods
-

Yield: 80%

Reaction Conditions:

with 1,8-diazabicyclo[5.4.0]undec-7-ene in acetonitrile at 0 - 20; for 2 h;

Steps:

General procedure for H-phosphonate alkylation
General procedure: To a stirred solution of Hphosphonate (3 mmol, 1 equiv) in CH3CN (6 mL) was added the halide (3.3 mmol, 1.1 equiv) and DBU (0.5 mL, 3.3 mmol, 1.1 equiv) at 0°C. The stirred mixture was allowed to warm to rt over 2 h. The organic layer was washed with hexane (2x). The residue obtained upon evaporation was purified by column chromatography over silica gel (hexane to EtOAc) to give the expected phosphonate.

References:

Gavara, Laurent;Petit, Christelle;Montchamp, Jean-Luc [Tetrahedron Letters,2012,vol. 53,# 37,p. 5000 - 5003] Location in patent:supporting information

DIPHENYL METHYLPHOSPHONATE Related Search:

鹤岗市| 拜城县| 奉化市| 新邵县| 太仆寺旗| 香港| 安徽省| 离岛区| 色达县| 舞钢市| 东辽县| 安远县| 潍坊市| 百色市| 天长市| 霍城县| 舞钢市| 墨江| 资兴市| 松原市| 霍山县| 平阴县| 衢州市| 凯里市| 江源县| 松桃| 桐乡市| 蓝田县| 斗六市| 霞浦县| 孝义市| 特克斯县| 长宁区| 五莲县| 横山县| 抚顺市| 南雄市| 陆良县| 临高县| 美姑县| 福泉市|