申请人:Fujita Yukihiro
公开号:US20070015932A1
公开(公告)日:2007-01-18
The present invention provides a process for producing an amino acid N-carboxyanhydride, which comprises reacting an amino acid or a derivative thereof with a compound represented by the following formula (1):
wherein R
1
and R
2
represent the same or different electron-withdrawing substituents and each independently are an optionally substituted acyl group, an optionally substituted alkyloxycarbonyl group, an optionally substituted perfluoroalkyl group, an optionally substituted perchloroalkyl group, a cyano group, a halogen atom, or a nitro group; and a and b are the same or different and each are an integer of 1-5.
本发明提供了一种制备氨基酸N-羧酸酐的方法,该方法包括使氨基酸或其衍生物与以下式(1)表示的化合物反应:
其中,R1和R2表示相同或不同的吸电子取代基,各自独立地为可任选取代的酰基、可任选取代的烷氧羰基、可任选取代的全氟烷基、可任选取代的全氯烷基、氰基、卤素原子或硝基;且a和b相同或不同,各自为1至5的整数。