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 1-(2-CYANOPHENYL)PIPERAZINE
111373-03-6

1-(2-CYANOPHENYL)PIPERAZINE synthesis

8synthesis methods
-

Yield: 89%

Reaction Conditions:

with potassium carbonate in toluene

Steps:

42.a 42a.
42a. 4-Piperazinylbenzenecarboonitrile 4-Fluorobenzonitrile (15.87 g, 0.131 mol), potassium carbonate (90.55 g, 0.655 mol) and piperazine (33.8 g, 0.393 mol) were slurried together in dry toluene (250 mL). The resulting mixture was heated to reflux for 3 days, cooled to ambient temperature, diluted with ethyl acetate. The reaction mixture was washed with water (3*), brine and then extracted with ethyl acetate (2*). The combined organic layers were dried over sodium sulfate, filtered and the solvent removed in vacuo to give the title product (21.8 g, 89%) as an off-white solid: 1H NMR (CDCl3) δ7.48 (m, 2H), 6.85 (m, 2H), 3.27 (m, 4H), 3.00 (m, 4H), 1.67 (s, 1H).

References:

Fang, Xinqin;Garvey, David S.;Gaston, Ricky D.;Lin, Chia-En;Ranatunga, Ramani R.;Richardson, Stewart K.;Wang, Tiansheng;Wang, Weiheng;Wey, Shiow-Jyi US2003/203915, 2003, A1

1-(2-CYANOPHENYL)PIPERAZINE Related Search:

达孜县| 南陵县| 孝昌县| 德阳市| 榆树市| 广德县| 洪江市| 宁陵县| 剑河县| 繁昌县| 新营市| 中牟县| 托克托县| 通山县| 托克托县| 静宁县| 永丰县| 故城县| 武宣县| 汉中市| 巴林右旗| 遂宁市| 临猗县| 新建县| 云南省| 阳江市| 永川市| 崇信县| 楚雄市| 岱山县| 鄂州市| 常山县| 安远县| 乐东| 临江市| 嘉鱼县| 新巴尔虎右旗| 容城县| 湘西| 望城县| 怀仁县|