PROCESSES AND INTERMEDIATES FOR PRODUCING AZAINDOLES
申请人:Vertex Pharmaceuticals Incorporated
公开号:US20130303764A1
公开(公告)日:2013-11-14
The present invention relates to processes and intermediates for the preparation of compounds useful as inhibitors of Janus kinases (JAK).
本发明涉及用于制备作为Janus激酶(JAK)抑制剂的化合物的过程和中间体。
METHOD FOR PRODUCING SOLID AMINO ACID
申请人:Kaneka Corporation
公开号:EP2810933A1
公开(公告)日:2014-12-10
The problem to be solved by the present invention is to ea sily and efficiently produce an amino acid having 2 to 7 carbon atoms as a high-purity solid without complicated operation, whic h is useful as a synthetic intermediate for medicines or agroche micals.
The present invention is characterized in comprising a ste p of precipitating solid amino acid with high purity. In the pr esent invention, the by-produced salt composed of the sulfonic a cid and the amine was removed to the mother liquor by reacting a n amine with a sulfonic acid salt of amino acid in an aprotic pol ar solvent, or by reacting a sulfonic acid with an amine salt of amino acid in an aprotic polar solvent.
The sulfonic acid salt of amino acid, for example, may be produced by reacting a N-(tert-butoxycarbonyl) amino acid with a sulfonic acid, or by reacting an amino acid tert-butyl ester we th a sulfonic acid.