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 N-Formylpiperidine
2591-86-8

N-Formylpiperidine synthesis

12synthesis methods
-

Yield:2591-86-8 100%

Reaction Conditions:

with cyano-hydroxyimino-acetic acid 2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester;sodium hydrogencarbonate;1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride in water at 20; for 3 h;Reagent/catalyst;Solvent;

Steps:

General procedure for N-formylations
General procedure: To a solution of amine (1 equiv), formic acid (5 equiv), sodium bicarbonate (10 equiv), and glyceroacetonide-Oxyma 1 (2 equiv) in H2O (0.2-0.3 M) solution was added EDCI (2 equiv) The reaction mixture was stirred for 3 h and quenched with 1% aq HCl. The aqueous phase was extracted with EtOAc (or CHCl3 or CHCl3-MeOH (10/1). The combined organic extracts were dried over Na2SO4 and evaporated in vacuo. Purification by a silica gel chromatography (or sephadex LH20) afforded the desired compound (yields were given in Table 1). Similarly, N-formylations were performed with Oxyma 1 in DMF-H2O (9/1).

References:

Aleiwi, Bilal A.;Mitachi, Katsuhiko;Kurosu, Michio [Tetrahedron Letters,2013,vol. 54,# 16,p. 2077 - 2081]

FullText

N-Formylpiperidine Related Search:

新晃| 许昌市| 多伦县| 揭阳市| 乌拉特前旗| 托克托县| 邹平县| 宜宾市| 三江| 湖南省| 西丰县| 五华县| 高州市| 龙南县| 赣榆县| 镇江市| 崇信县| 陇南市| 株洲县| 大英县| 上杭县| 庆云县| 彭阳县| 三河市| 蒙自县| 邵东县| 文化| 高唐县| 西畴县| 聂拉木县| 抚松县| 马公市| 荣成市| 浦东新区| 盈江县| 察隅县| 射洪县| 壶关县| 绥江县| 理塘县| 关岭|