公开(公告)号：DE3937282A1

公开(公告)日：1991-05-16

申请号：DE3937282

申请日：1989-11-09

Applicant: HOECHST AG

Inventor： SELL GUENTHER DR ,  SEMLER GUENTHER DR

IPC: C07C315/04 ,  C07C317/14

Abstract: PCT No. PCT/EP90/01846 Sec. 371 Date Jun. 15, 1992 Sec. 102(e) Date Jun. 15, 1992 PCT Filed Nov. 3, 1990 PCT Pub. No. WO91/07384 PCT Pub. Date May 30, 1991.Process for the preparation of alkyl 3-chlorophenyl sulfones of the formula (I), in which R1 and R2 are straight-chain or branched alkyl (C1-C4) groups, which can be identical or different, by reacting alkyl phenyl sulfones of the formula (II), in which R1 and R2 have the meanings given above, with chlorine in sulfuric acid or fuming sulfuric acid at temperatures of about 20 to about 180 DEG C.

公开(公告)号：DE3839743A1

公开(公告)日：1990-05-31

申请号：DE3839743

申请日：1988-11-25

Applicant: HOECHST AG

Inventor： MEIER MICHAEL DR ,  SEMLER GUENTHER DR

IPC: C07D235/26

Abstract: Process for the preparation of benzimidazolones of the formula (1) (1) in which R1 and R2 are identical or different and denote hydrogen or halogen atoms, or alkyl(C1-C4), alkoxy(c1-C4), trifluoromethyl, phenyl, phenoxy or nitro groups, by reacting o-phenylenediamines of the formula (2) (2) in which R1 and R2 have the meaning given, with phosgene in water in the presence of an alkali metal base or alkaline earth metal base or a salt of an alkali metal hydroxide or alkaline earth metal hydroxide and a weakly inorganic or organic acid or a mixture of such salts or a suitable buffer system, at a pH of about 6 to about 12, and at a temperature of about 20 DEG to 100 DEG C.

公开(公告)号：DE3513599C1

公开(公告)日：1986-06-05

申请号：DE3513599

申请日：1985-04-16

Applicant: HOECHST AG

Inventor： SEMLER GUENTHER DR ,  SCHAEFFER GEORG DR

IPC: C07C271/04 ,  C07C67/00 ,  C07C239/00 ,  C07C271/02 ,  C07C125/03

Abstract: Carbamoyl chlorides derived from secondary aliphatic amines having alkyl groups which are branched in the 1-position are prepared by passing phosgene at an elevated temperature into the corresponding, initially taken-if appropriate dissolved in an inert solvent-secondary aliphatic amines having alkyl groups which are branched in the 1-position. The reaction products are intermediates in various specialized fields, particularly in the plant protection sector.