公开(公告)号：EP0712831A4

公开(公告)日：1996-09-25

申请号：EP94923063

申请日：1994-08-03

申请人： DAIICHI SEIYAKU CO

发明人： AKIBA TOSHIFUMI ,  IKEYA TAKANOBU ,  KAWANISHI HIROFUMI ,  YUKIMOTO YUSUKE ,  KAMIHARA SHINJI ,  EBATA TSUTOMU

IPC分类号： C07C51/377 ,  C07C67/317 ,  C07C61/15 ,  C07C51/347 ,  C07C69/74

CPC分类号： C07C51/377 ,  C07C67/317 ,  C07C61/15 ,  C07C69/74

摘要： A convenient process for producing a compound represented by general formula (2) by the catalytic hydrogenolysis of a compound represented by general formula (1) or (3) in the presence of a base, wherein R represents hydrogen or C1-C4 alkyl; and X represents chlorine or bromine. The obtained compound can be used as an intermediate for producing medicines.