成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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: