公开(公告)号：US3435023A

公开(公告)日：1969-03-25

申请号：US3435023D

申请日：1965-10-26

Applicant: HOECHST AG

Inventor： MEININGER FRITZ ,  HILLE ERNST

IPC: C09B62/47 ,  C09B29/00 ,  C09B39/00

CPC classification number: C09B62/47

公开(公告)号：AU1340876A

公开(公告)日：1977-11-03

申请号：AU1340876

申请日：1976-04-28

Applicant: HOECHST AG

Inventor： PASZTHORY EMMERICH ,  HILLE ERNST ,  SEIFERT KARL-GERHARD ,  ZIMMERMANN VINCENZ

IPC: C07C235/80 ,  C07C67/00 ,  C07C231/00 ,  C07C231/04 ,  C07C233/16 ,  C07C103/38 ,  C09B29/00 ,  C09B31/00 ,  C09B33/00 ,  C09B35/00

Abstract: N-acetoacetyl-2,5-dimethoxy-4-chloroanilide is obtained in high yield and purity by suspending 2,5-dimethoxy-4-chloroaniline in water and adding the complete amount of diketene necessary altogether at the beginning of the reaction. The product is obtained in a purity allowing its use as an azoic coupling component without purification.

公开(公告)号：CA1058621A

公开(公告)日：1979-07-17

申请号：CA251369

申请日：1976-04-28

Applicant: HOECHST AG

Inventor： SAHM WILFRIED ,  HILLE ERNST ,  SCHILLER WOLFGANG

IPC: C07D235/26

Abstract: PROCESS FOR THE PREPARATION OF 5-ACETOACETYLAMINO- . BENZIMIDAZOLONE 5-Acetoacetylamino benzimidazolone-(2) is obtained in high yield and excellent purity by reacting diketene with the aqueous solution of a salt of 5-amino-benzimidazolone-(2) and an acid having a pKa value of 1 to 7, preferably in the presence of an antioxidant and/or a reducing agent.

公开(公告)号：CA751430A

公开(公告)日：1967-01-24

申请号：CA751430D

Applicant: HOECHST AG

Inventor： OSTERLOH FRITZ ,  MEININGER FRITZ ,  HILLE ERNST

公开(公告)号：CA994359A

公开(公告)日：1976-08-03

申请号：CA179033

申请日：1973-08-17

Applicant: HOECHST AG

Inventor： KUMMERLE KURT ,  ALBERS ARNOLD ,  HILLE ERNST ,  HEISE HARTMUT

IPC: C07C309/42 ,  C07C67/00 ,  C07C209/00 ,  C07C209/36 ,  C07C211/52 ,  C07C301/00 ,  C07C303/22 ,  C07C313/00 ,  C07C315/04 ,  C07C317/36

公开(公告)号：CA797237A

公开(公告)日：1968-10-22

申请号：CA797237D

Applicant: HOECHST AG

Inventor： HILLE ERNST ,  MEININGER FRITZ

公开(公告)号：CA1072117A

公开(公告)日：1980-02-19

申请号：CA251319

申请日：1976-04-28

Applicant: HOECHST AG

Inventor： HILLE ERNST ,  RUECK RUDOLF

IPC: C07C231/00 ,  C07C20060101 ,  C07C67/00 ,  C07C231/04 ,  C07C231/14 ,  C07C233/78 ,  C07C103/34

Abstract: HOE 75/F 105 PROCESS FOR THE PREPARATION OF ACETOACETYLARYL AMIDES Acetoacetylarylamides are obtained in high yield and excellent purity by reacting a small excess of diketene with an aqueous suspension or emulsion of the arylamine at a temperature which is sufficiently high that the product is obtained in a non-solid form, i.e. in a solution or emulsion.

公开(公告)号：CA1048546A

公开(公告)日：1979-02-13

申请号：CA240271

申请日：1975-11-24

Applicant: HOECHST AG

Inventor： PASZTHORY EMMERICH ,  MEES BERNHARD ,  HILLE ERNST

IPC: C07B61/00 ,  C07C20060101 ,  C07C67/00 ,  C07C213/00 ,  C07C213/02 ,  C07C217/84 ,  C07C93/14

Abstract: PROCESS FOR PREPARING 4-CHLORO-2,5-DIMETHOXY ANILINE The catalytic hydrogenation of 4-chloro-2,5-dimethoxy nitrobenzene can be performed in water with a nickel catalyst if the average particle size is below 0.1 mm. The resulting aniline is reacted with diketene and the so-obtained N-aceto-acetyl derivative is an azoic coupling component.

公开(公告)号：AU496793B2

公开(公告)日：1978-10-26

申请号：AU1340876

申请日：1976-04-28

Applicant: HOECHST AG

Inventor： PASZTHORY EMMERICH ,  HILLE ERNST ,  SEIFERT KARL-GERHARD ,  ZIMMERMANN VINCENZ

IPC: C07C235/80 ,  C07C67/00 ,  C07C231/00 ,  C07C231/04 ,  C07C233/16 ,  C07C103/38 ,  C09B29/00 ,  C09B31/00 ,  C09B33/00 ,  C09B35/00

Abstract: N-acetoacetyl-2,5-dimethoxy-4-chloroanilide is obtained in high yield and purity by suspending 2,5-dimethoxy-4-chloroaniline in water and adding the complete amount of diketene necessary altogether at the beginning of the reaction. The product is obtained in a purity allowing its use as an azoic coupling component without purification.