公开(公告)号：DE2805620A1

公开(公告)日：1979-08-23

申请号：DE2805620

申请日：1978-02-10

Applicant: BASF AG

Inventor： OPGENORTH HANS-JOACHIM DIPL CH ,  SCHEUERMANN HORST DIPL CHEM DR ,  LAAS HARALD DIPL CHEM DR ,  NISSEN AXEL DIPL CHEM DR

IPC: C07D209/08

公开(公告)号：DE2840125A1

公开(公告)日：1980-04-03

申请号：DE2840125

申请日：1978-09-15

Applicant: BASF AG

Inventor： LAAS HARALD DIPL CHEM DR ,  NISSEN AXEL DIPL CHEM DR ,  MEISSNER BERND DIPL CHEM DR

IPC: C07C69/007 ,  B01J27/00 ,  B01J27/10 ,  C07B61/00 ,  C07C67/00 ,  C07C67/29 ,  C07C67/293 ,  C07C69/145

公开(公告)号：DE2834607A1

公开(公告)日：1980-02-28

申请号：DE2834607

申请日：1978-08-07

Applicant: BASF AG

Inventor： LAAS HARALD DIPL CHEM DR ,  NISSEN AXEL DIPL CHEM DR ,  OPGENORTH HANS-JOACHIM DIPL CH ,  SCHEUERMANN HORST DIPL CHEM DR ,  MUELLER HANS-RICHARD DIPL CHEM ,  SCHULTE WOLFGANG DIPL CHEM DR

IPC: C07D209/08 ,  C07D209/60 ,  C07D209/96 ,  C07D263/38 ,  C07D263/52

Abstract: A process for the preparation of an indolenine of the general formula I I where R, R1 and R2 are aliphatic radicals and R1 and R2 may also be linked and the ring A may be additionally substituted, wherein a compound of the formula II II is heated in the presence of a Lewis acid and of a halide. The products are valuable starting compounds for the preparation of dyes.