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 6-BROMONICOTINAMIDE
889676-37-3

6-BROMONICOTINAMIDE synthesis

2synthesis methods
-

Yield:889676-37-3 92%

Reaction Conditions:

with sodium t-butanolate in 5,5-dimethyl-1,3-cyclohexadiene;ethanol; for 4 h;Reflux;

Steps:

3 Example 3

A mixture of 2-bromo-5-cyanopyridine (10 mmol, 1.83 g),Sodium tert-butoxide (0 · 1 mmol, 9 · 6 mg)(V: V = 3: 1) in a mixed solvent of xylene / ethanol (V: V = 3: 1). After the reaction was allowed to proceed for 4 hours, the reaction was stopped,After drying, the residue was purified by silica gel column chromatography to give 1.84 g of 2-bromo-5-amidopyridine as a white solid

References:

CN104016913,2016,B Location in patent:Paragraph 0033-0036

6-BROMONICOTINAMIDE Related Search:

正阳县| 江西省| 内乡县| 崇明县| 全南县| 孝昌县| 双桥区| 安西县| 西吉县| 夹江县| 东阿县| 长泰县| 大宁县| 咸阳市| 黔江区| 金溪县| 鄂尔多斯市| 靖安县| 灵石县| 柯坪县| 社旗县| 顺义区| 昌宁县| 方山县| 双桥区| 宝丰县| 旬阳县| 抚远县| 潜江市| 华池县| 巨鹿县| 滕州市| 东莞市| 工布江达县| 疏附县| 乾安县| 民权县| 廉江市| 城固县| 肃南| 平顺县|