公开(公告)号：AU1145201A

公开(公告)日：2001-06-06

申请号：AU1145201

申请日：2000-10-27

Applicant: BASF AG

Inventor： HOLMAN NICHOLAS JOHN ,  FRIEND CHRISTOPHER LYNDON

IPC: C07D249/08 ,  C07C303/40 ,  C07C311/35 ,  C07D209/14 ,  C07D209/16 ,  C07D263/20 ,  C07D295/20 ,  C07D401/06 ,  C07D403/04 ,  C07D403/14 ,  C07D413/14

公开(公告)号：CA2389514A1

公开(公告)日：2001-05-17

申请号：CA2389514

申请日：2000-10-27

Applicant: BASF AG

Inventor： FRIEND CHRISTOPHER LYNDON ,  HOLMAN NICHOLAS JOHN

IPC: C07D249/08 ,  C07C303/40 ,  C07C311/35 ,  C07D209/14 ,  C07D209/16 ,  C07D263/20 ,  C07D295/20 ,  C07D401/06 ,  C07D403/04 ,  C07D403/14 ,  C07D413/14

Abstract: The present invention relates to a process for preparing phenylhydrazines of formula (I) in which R represents CH2SO2NHCH3, CH2CH2SO2Ph, CH2CH2SO2NHMe or a group of structure (A), (B), (C), in which a diazonium salt of formula (II) in which X represents an anion derived from hydrochloric acid, sulphuric acid, acetic acid, phosphoric acid, tetrafluoroboric acid or hydrobromic acid is reduced by a dithionite salt. The resulting phenylhydrazines can be converte d to the corresponding indole derivatives by the Fischer indole synthesis.