公开(公告)号：DE3873161D1

公开(公告)日：1992-09-03

申请号：DE3873161

申请日：1988-05-07

Applicant: BASF AG

Inventor： DOCKNER TONI DR ,  KRUG HERBERT ,  ROTERMUND GERHARD W DR ,  WEYRAUCH VOLKER DR

IPC: C07B61/00 ,  C07D231/12 ,  C07D231/16 ,  C07D231/18 ,  C07D231/20 ,  C07D521/00

Abstract: Prodn. of pyrazoles (I) comprises dehydrogenation of pyrazolines (II) with nitro-aromatic cpds. (III) in presence of S catalyst at over 50 deg.C. Specifically (III) is an opt. substd. nitrobenzene, nitronapthalene or nitroanthraquinone, used at 0.5-3 (esp. 1-2) equiv. per mole (II), and S is 0.1-10 mole% an (II).

公开(公告)号：DE3716293A1

公开(公告)日：1988-11-24

申请号：DE3716293

申请日：1987-05-15

Applicant: BASF AG

Inventor： DOCKNER TONI DR ,  KRUG HERBERT ,  ROTERMUND GERHARD W DR ,  WEYRAUCH VOLKER DR

IPC: C07B61/00 ,  C07D231/12 ,  C07D231/16 ,  C07D231/18 ,  C07D231/20 ,  C07D521/00 ,  C07D231/10