公开(公告)号：BR7400555D0

公开(公告)日：1974-08-22

申请号：BR55574

申请日：1974-01-25

Applicant: HOECHST AG

Inventor： SCHINZEL E ,  ROSCH G ,  SAHM W ,  HORN A

IPC: C08K5/00 ,  C07D307/79 ,  C07D307/92 ,  C08K5/3442 ,  C08L33/00 ,  C08L33/02 ,  C09B1/00 ,  C11D3/42 ,  C07D405/06 ,  C07D405/14 ,  C07D405/10 ,  C07D409/14 ,  D06L3/12

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：DK136717C

公开(公告)日：1978-05-01

申请号：DK398272

申请日：1972-08-11

Applicant: HOECHST AG

Inventor： SAHM W ,  HORN A

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

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：SE401834B

公开(公告)日：1978-05-29

申请号：SE1044272

申请日：1972-08-11

Applicant: HOECHST AG

Inventor： SAHM W ,  HORN A

IPC: C07C45/70 ,  C07C45/71 ,  C09K3/00 ,  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：BR7205493D0

公开(公告)日：1973-09-20

申请号：BR549372

申请日：1972-08-11

Applicant: HOECHST AG

Inventor： SAHN W ,  HORN A

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 ,  C07D5/40 ,  C07D5/46

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：CA986514A

公开(公告)日：1976-03-30

申请号：CA149212

申请日：1972-08-11

Applicant: HOECHST AG

Inventor： SAHM W ,  HORN A

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

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.