公开(公告)号：DE2944696A1

公开(公告)日：1981-05-14

申请号：DE2944696

申请日：1979-11-06

Applicant: BASF AG

Inventor： REISSENWEBER GERNOT DIPL CHEM ,  MANGOLD DIETRICH DIPL CHEM DR

IPC: C07D265/36

公开(公告)号：DE2724366A1

公开(公告)日：1978-12-07

申请号：DE2724366

申请日：1977-05-28

Applicant: BASF AG

Inventor： OESER HEINZ-GUENTER DIPL CHEM ,  KOENIG KARL-HEINZ DIPL CHEM DR ,  MANGOLD DIETRICH DIPL CHEM DR

IPC: C07C201/12 ,  C07C205/12 ,  C07C79/12 ,  C07C121/52

Abstract: Fluorobenzenes of formula (I) are prepd. by reaction of chlorobenzenes of formula (II) with potassium fluoride in a suitable solvent. In the formulae, R1=nitro or cyano and R2=H, an aliphatic radical or halo. The reaction is effected using catalytic quantities of cesium fluoride or when (II) is a m-nitrochlorobenzene or m-cyanochlorobenzene it is not necessary to use cesium fluoride. Suitable solvents are N, N-disubstd. carboxylic acid amides, nitrobenzene, nitriles, aliphatic sulphones and/or aliphatic sulphoxides. (I) are intermediates for dyes, pharmaceuticals and parasiticides. (I) may be reduced to the corresp. aniline deriv. which are used in paints, as germicides and is welding fluxes. Compared with known processes the present process gives higher yields and purer products. The reaction is effected at low temperatures is rapid, economic and suitable for industrial scale prodn.

公开(公告)号：DE2711659A1

公开(公告)日：1978-09-21

申请号：DE2711659

申请日：1977-03-17

Applicant: BASF AG

Inventor： GOETZ NORBERT DIPL CHEM DR ,  MANGOLD DIETRICH DIPL CHEM DR ,  ZEEH BERND DIPL CHEM DR

IPC: C07D263/44

Abstract: 2,4-Dioxo-oxazolidines are manufactured by reacting aromatic amines with alpha -hydroxycarboxylic acid of the formula where R1 and R2 have the above meanings, Hal is halogen, preferably chlorine, and R4 is alkyl of 1 to 4 carbon atoms in the presence of a base, preferably at 20-120 DEG C.

公开(公告)号：DE2705695A1

公开(公告)日：1978-08-17

申请号：DE2705695

申请日：1977-02-11

Applicant: BASF AG

Inventor： REITEL CHRISTIAN DIPL CHEM DR ,  KOENIG KARL-HEINZ DIPL CHEM DR ,  MANGOLD DIETRICH DIPL CHEM DR

IPC: C07C265/04 ,  C07C20060101 ,  C07C67/00 ,  C07C241/00 ,  C07C263/04 ,  C07C119/042 ,  C07C118/00

公开(公告)号：DE2519584A1

公开(公告)日：1976-11-11

申请号：DE2519584

申请日：1975-05-02

Applicant: BASF AG

Inventor： MANGOLD DIETRICH DIPL CHEM DR ,  KOENIG KARL-HEINZ DIPL CHEM DR ,  REITEL CHRISTIAN DIPL CHEM DR

IPC: C07C271/08 ,  C07C20060101 ,  C07C67/00 ,  C07C239/00 ,  C07C125/06

公开(公告)号：DE2461963A1

公开(公告)日：1976-07-08

申请号：DE2461963

申请日：1974-12-31

Applicant: BASF AG

Inventor： MANGOLD DIETRICH DIPL CHEM DR ,  MERKLE HANS DIPL CHEM DR ,  REITEL CHRISTIAN DIPL CHEM DR

IPC: C07C263/04 ,  C07C265/06 ,  C07C119/042

Abstract: Parent patent discloses a process for prepn. of 1-alkenyl-isocyanates of formula (I) (where each R' is H, alkyl, cycloalkyl, aralkyl or aryl, and unless they are H, 2 R' groups together may den ote members of a carbocyclic ring) by heat decompsn. of N-(1-alkenyl)-N-tert-alkyl carbamo 1 chlorides of formula (II) (where R2 is tert alkyl and X is halogen). In present Patent of Addn. pyrolysis takes place in the presence of Zn phosphate. (I) are useful monomers or co-monomers for prepn. of polymers. Yields of (I) and service-life of catalysts are improved.