申请人:Sterling Drug Inc.
公开号:US03993645A1
公开(公告)日:1976-11-23
Benzofurans, benzothiophenes, indoles, naphthofurans and benzofuranobenzofurans which are substituted by 4-vinylphenyl groups wherein the 2-position of the vinyl is substituted by a monovalent aromatic radical having one to three aromatic rings are optical brightening agents useful for whitening and brightening natural and synthetic fibers, papers, resins and the like. The compounds are conveniently prepared by interacting benzofurans, benzothiophenes, indoles, naphthofurans or benzofuranobenzofurans which are substituted by a p-tolyl group, with an aromatic aldehyde or preferably the anil derivative thereof.
苯并呋喃、苯并噻吩、吲哚、萘呋喃和苯并呋喃苯并呋喃,这些化合物被4-乙烯基苯基基团取代,其中乙烯的2-位被具有一个至三个芳香环的一价芳香基团取代,是用于美白和增白天然和合成纤维、纸张、树脂等的光亮剂。这些化合物可以通过将被对甲苯基取代的苯并呋喃、苯并噻吩、吲哚、萘呋喃或苯并呋喃苯并呋喃与芳香醛或更好地与其苯胺衍生物相互作用来方便地制备。