公开(公告)号：CA1077489A

公开(公告)日：1980-05-13

申请号：CA247078

申请日：1976-03-04

Applicant: HOECHST AG

Inventor： PROSSEL GUENTER ,  SAHM WILFRIED ,  SCHINZEL ERICH ,  ROESCH GUENTER

IPC: C08K5/00 ,  C07D413/04 ,  C08L1/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L67/00 ,  C08L77/00 ,  C08L101/00 ,  C09B57/00 ,  D06P1/00 ,  C07D271/10

Abstract: NOVEL BENZOFURAN DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE AS OPTICAL BRIGHTENERS Compounds of the formula A (1) , in which A stands for aromatic mono- or polynuclear ring systems which are fused with the furan nuclei in the manner indicated above by means of two adjacent carbon atoms, R represents hydrogen or halogen atoms, lower alkyl groups, phenyl groups which are optionally substituted by lower alkyl, lower alkoxy groups or halogen atoms, as well as optionally functionally modified carboxy or sulfo groups, and D is a direct bond or a divalent aliphatic, aromatic or heteroaromatic connecting member continuing the conjugation, group A may be substituted by lower alkyl, alkenyl, alkoxy, aryl groups, preferably phenyl groups, optionally functionally modified carboxy or sulfo groups, acyl, acylamino or sulfonyl groups, as well as by halogen atoms. These compounds are valuable optical brighteners and can be applied by the methods known in this field.

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：NO137276C

公开(公告)日：1978-02-01

申请号：NO288972

申请日：1972-08-11

Applicant: HOECHST AG

Inventor： SAHM WILFRIED ,  HORN ANTON

IPC: C07C45/70 ,  C09K3/00 ,  C07C45/71 ,  C07C47/575 ,  C07C49/84 ,  C07C205/35 ,  C07D263/56 ,  C07D263/60 ,  C07D307/77 ,  C07D307/79 ,  C07D307/81 ,  C07D307/92 ,  C07D307/93 ,  C07D413/04

Abstract: Benzofuranes are obtained by intramolecular condensation of aromatic oxo compounds having an oxymethylene group in ortho position. The condensation is effected with strongly alkaline agents in solution or in an alkali metal hydroxide melt. The products are useful as scintilators and optical brighteners.

公开(公告)号：DK133506B

公开(公告)日：1976-05-31

申请号：DK684373

申请日：1973-12-17

Applicant: HOECHST AG

Inventor： SAHM WILFRIED

IPC: C07D307/78 ,  B01J10/00 ,  C07D307/77 ,  C07D307/79 ,  C07D307/80 ,  C07D307/87 ,  C07D307/92 ,  C07D407/02 ,  C07D409/06 ,  C07D413/04 ,  C09B57/00 ,  D06L3/12 ,  C07D407/00

Abstract: Novel azomethines are obtained when reacting a tertiary amine with an aromatic aldehyde or ketone having in orthoposition an activated methoxy group. These azomethines are capable of ring closure to yield a benzofurane and said tertiary amine. The benzofuranes are optical brighteners tranquilizers or intermediates for optical brighteners, fluorescent dyestuffs, scintiallators, sensibilizers for electrophotographic coatings.

公开(公告)号：CA1042899A

公开(公告)日：1978-11-21

申请号：CA188308

申请日：1973-12-17

Applicant: HOECHST AG

Inventor： SAHM WILFRIED

IPC: C07D307/78 ,  B01J10/00 ,  C07D307/77 ,  C07D307/79 ,  C07D307/80 ,  C07D307/87 ,  C07D307/92 ,  C07D407/02 ,  C07D409/06 ,  C07D413/04 ,  C09B57/00 ,  D06L3/12 ,  C07D263/60 ,  C07C119/10

Abstract: PROCESS FOR THE PREPARATION OF FURAN COMPOUNDS Novel azomethines are obtained when reacting a tertiary amine with an aromatic aldehyde or ketone having in orthoposition an activated methoxy group. These azomethines are capable of ring closure to yield a benzofurane and said tertiary amine. The benzofuranes are optical brighteners tranquilizers or intermediates for optical brighteners, fluorescent dyestuffs, scintiallators, sensibilizers for electrophotographic coatings.

公开(公告)号：CA1026342A

公开(公告)日：1978-02-14

申请号：CA192191

申请日：1974-02-11

Applicant: HOECHST AG

Inventor： SAHM WILFRIED ,  SCHINZEL ERICH ,  ROESCH GUENTER

IPC: C08K5/00 ,  C07D271/10 ,  C07D307/79 ,  C07D307/85 ,  C08K5/45 ,  C08L1/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L67/00 ,  C08L77/00 ,  C08L101/00 ,  C09B57/00

公开(公告)号：CA982138A

公开(公告)日：1976-01-20

申请号：CA149213

申请日：1972-08-11

Applicant: HOECHST AG

Inventor： SAHM WILFRIED ,  ROESCH GUENTER

IPC: C09K11/06 ,  C07D307/77 ,  C07D307/79 ,  C08K5/00 ,  C08K5/1535 ,  C08K5/16 ,  C08K5/41 ,  C08L1/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L67/00 ,  C08L77/00 ,  C08L101/00 ,  C09B57/00

Abstract: Novel benzofurane compounds are obtained by intramolecular condensation reactions of the corresponding ketones. The products are useful as optical brighteners.

公开(公告)号：AU4544072A

公开(公告)日：1974-02-14

申请号：AU4544072

申请日：1972-08-10

Applicant: HOECHST AG

Inventor： SAHM WILFRIED ,  HORN ANTON

IPC: C09K3/00 ,  C07C45/70 ,  C07C45/71 ,  C07C47/575 ,  C07C49/84 ,  C07C205/35 ,  C07D263/56 ,  C07D263/60 ,  C07D307/77 ,  C07D307/79 ,  C07D307/81 ,  C07D307/92 ,  C07D307/93 ,  C07D413/04 ,  C07D5/14 ,  C07D5/42

Abstract: Benzofuranes are obtained by intramolecular condensation of aromatic oxo compounds having an oxymethylene group in ortho position. The condensation is effected with strongly alkaline agents in solution or in an alkali metal hydroxide melt. The products are useful as scintilators and optical brighteners.

公开(公告)号：CA1039289A

公开(公告)日：1978-09-26

申请号：CA190947

申请日：1974-01-25

Applicant: HOECHST AG

Inventor： HORN ANTON ,  SCHINZEL ERICH ,  SAHM WILFRIED ,  ROESCH GUENTER

IPC: C08K5/00 ,  C07D307/79 ,  C07D307/92 ,  C08K5/3442 ,  C08L33/00 ,  C08L33/02 ,  C09B1/00 ,  C11D3/42 ,  C07D405/02

Abstract: Novel benzofuran containing a benzimidazolyl group are obtained by reacting a benzofuran containing a carboxylic acid halide group with either an ortho-phenylene diamine or an ortho-nitro-aniline derivative, in the latter case reducing the nitro intermediate to the corresponding (aminophenyl)-amide and splitting off water by closing the imidazole ring. The products are optical brighteners, especially for acrylonitrile polymers.

公开(公告)号：CA1023504A

公开(公告)日：1978-01-03

申请号：CA189994

申请日：1974-01-11

Applicant: HOECHST AG

Inventor： BUECKING HANS W ,  HESS PETER ,  KOENIG FRANZ ,  SAHM WILFRIED ,  SCHNEIDER GERHART

IPC: C11D3/32 ,  C11D3/39 ,  C11D3/42

Abstract: Peracylated aliphatic polyamines are useful as activators for inorganic peroxo compounds, i.e., they set free the available oxygen of the peroxo compounds in aqueous solutions at temperatures below 80 DEG C and are thus useful as additives to detergents especially inasmuch as they are compatible with usual detergent brighteners.