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 ERYTHRO-N-BOC-L-3,5-DIFLUOROPHENYLALANINE EPOXIDE
388071-27-0

ERYTHRO-N-BOC-L-3,5-DIFLUOROPHENYLALANINE EPOXIDE synthesis

6synthesis methods
-

Yield:388071-27-0 90%

Reaction Conditions:

with potassium hydroxide in ethanol at 0; for 2 h;

Steps:

49

A solution of tert-butyl (1 S, 2S)-3-chloro-1- (3, 5-diflurorbenzyl)-2- hydroxypropylcarbamate in ethanol (150 mL) was cooled to 0 °C. A solution of KOH in EtOH (25 mL) was added. The reaction was removed from the ice bath and stirred for 2 h. The reaction was diluted with 300 mL of water and placed into an ice bath. The resulting solid was collected by filtration and washed with cold water (100 mL). Drying overnight gave an off-white solid (6.74g, 22.51 mmol, 90%).

References:

WO2005/70407,2005,A1 Location in patent:Page/Page column 193

ERYTHRO-N-BOC-L-3,5-DIFLUOROPHENYLALANINE EPOXIDE Related Search: