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 BOC-D-1,2,3,4-TETRAHYDRONORHARMAN-3-CARBOXYLIC ACID
123910-26-9

BOC-D-1,2,3,4-TETRAHYDRONORHARMAN-3-CARBOXYLIC ACID synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

with potassium carbonate in tetrahydrofuran;water;acetonitrile

Steps:

1.F N-[(3R)-1,2,3,4-Tetrahydro-9H-pyrido3,4-b1indole-3-carboxy]-L-leucyl-L-aspartic acid amide.
F. 8.73 g di-t-butyl dicarbonate and 8.65 g (3R)-1,2,3,4-tetrahydro-9H-pyrido[3,4-b]indole-3-carboxylic acid are dissolved together in 150 ml tetrahydrofuran and 5.53 g potassium carbonate is added along with 150 ml of water. The mixture is stirred vigorously overnight. The mixture is evaporated in vacuo to remove most of the THF and the aqueous residue is acidified with 1N hydrochloric acid. This is extracted with ethyl acetate and the organic solution washed with brine, dried over sodium sulfate, filtered, and evaporated. The residue is evaporated from acetonitrile to give (3R)-2-tert-butoxycarbonyl-1,2,3,4-tetrahydro-9H-pyrido[3,4-b]indole-3-carboxylic acid.

References:

Rhone-Poulenc Rorer Pharmaceuticals Inc. US5162336, 1992, A

BOC-D-1,2,3,4-TETRAHYDRONORHARMAN-3-CARBOXYLIC ACID Related Search:

夹江县| 龙州县| 阿克| 唐山市| 翁源县| 新蔡县| 肃南| 平阴县| 勐海县| 景宁| 南开区| 南靖县| 赣州市| 浦江县| 化德县| 中卫市| 信宜市| 蚌埠市| 达尔| 新晃| 措美县| 新安县| 东丽区| 蒙自县| 阜南县| 高台县| 雷州市| 汤原县| 乌什县| 个旧市| 开原市| 花垣县| 图片| 南康市| 山阳县| 岳阳县| 迭部县| 青田县| 西峡县| 吴堡县| 山东省|