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!

68888-19-7

2-(Pyridin-2-yl)propan-1-ol synthesis

7synthesis methods
-

Yield:68888-19-7 84%

Reaction Conditions:

with lithium aluminium hydride in tetrahydrofuran at 0 - 20; for 1.5 h;

Steps:

3 Step 3:

Step 3: To a solution of methyl ester OOOOOO (43.0 g, 260.3 mmol, 1.0 equiv.) in THF (1500 mL, 0.1M) at 0° C. was added lithium aluminum hydride (312 mL, 312.4 mmol, 1.2 equiv., solution in THF) dropwise. The reaction was allowed to warm gradually to 0° C. for 30 minutes and then to room temperature for 1 hour or until the reaction was determined to be complete by LCMS or TLC. The reaction was carefully quenched with water, sodium hydroxide and water. After stirring the mixture for 30 minutes, the white precipitate was filtered off and the solvent was removed in vacuo. The reaction was then extracted with diethyl ether and the combined organic fractions were washed with water, brine, dried over magnesium sulfate, filtered, and concentrated in vacuo. The resulting alcohol (PPPPPP, 30.0 g, 219.0 mmol, 84%) was advanced without purification.

References:

US2015/329528,2015,A1 Location in patent:Paragraph 0099; 0102

玉龙| 南漳县| 会东县| 龙南县| 长武县| 宜兰县| 丹凤县| 攀枝花市| 湖南省| 梨树县| 栾城县| 伊川县| 萍乡市| 马边| 永和县| 宁海县| 台中市| 寻乌县| 汉寿县| 湛江市| 昭觉县| 连平县| 青神县| 普宁市| 阳谷县| 金门县| 大同县| 辛集市| 云龙县| 四川省| 汝阳县| 东城区| 合江县| 松江区| 清原| 水富县| 永寿县| 安吉县| 林口县| 聂拉木县| 张掖市|