申请人:Ciba-Geigy AG
公开号:US04202698A1
公开(公告)日:1980-05-13
Quinoxalines of the formula ##STR1## are provided, in which R.sub.1 and R.sub.2 independently are lower alkyl R.sub.3 is lower alkyl, --CH.sub.2 OR.sub.5, --CH.sub.2 NRR', --CH.sub.2 OCOR, --CH.sub.2 Cl, --CH.sub.2 Br, --CH.sub.2 SR, --CH.sub.2 O(CH.sub.2).sub.p OR, --CH.sub.2 PO(OR.sub.5).sub.2, --CH.sub.2 PO(OR.sub.6).sub.2, --CH.sub.2 SO.sub.3 R.sub.6, --O(CH.sub.2).sub.m OR, --O(CH.sub.2).sub.p SO.sub.3 R.sub.6 or --(OCH.sub.2 CH.sub.2).sub.n OAr, R.sub.4 is hydrogen, lower alkyl or alkoxy when R.sub.3 is other than lower alkyl, or R.sub.4 is --OH, --NRR', --NHCOR, --NHCOAr', --NHSO.sub.2 R.sub.5 or --NHSO.sub.2 Ar', R and R' independently are hydrogen or lower alkyl, R.sub.5 is lower alkyl, R.sub.6 is hydrogen, an alkali metal cation or --N.sup..sym. (R).sub.4, Ar is aryl or sulphonated aryl, Ar' is aryl or substituted aryl, m is 3 or 4, n is 1 to 3 and p is 2 to 4. The quinoxalines are useful as bleach catalysts, especially as dye bleach catalysts, for the photographic silver dye bleach process.
提供公式为##STR1##的喹喔啉,其中R.sub.1和R.sub.2独立地是较低的烷基,R.sub.3是较低的烷基,--CH.sub.2 OR.sub.5,--CH.sub.2 NRR',--CH.sub.2 OCOR,--CH.sub.2 Cl,--CH.sub.2 Br,--CH.sub.2 SR,--CH.sub.2 O(CH.sub.2).sub.p OR,--CH.sub.2 PO(OR.sub.5).sub.2,--CH.sub.2 PO(OR.sub.6).sub.2,--CH.sub.2 SO.sub.3 R.sub.6,--O(CH.sub.2).sub.m OR,--O(CH.sub.2).sub.p SO.sub.3 R.sub.6或--(OCH.sub.2 CH.sub.2).sub.n OAr,R.sub.4为氢,当R.sub.3不是较低的烷基时,R.sub.4为较低的烷基或烷氧基,或者R.sub.4为--OH,--NRR',--NHCOR,--NHCOAr',--NHSO.sub.2 R.sub.5或--NHSO.sub.2 Ar',R和R'独立地是氢或较低的烷基,R.sub.5是较低的烷基,R.sub.6是氢,碱金属阳离子或--N.sup..sym. (R).sub.4,Ar是芳基或磺化的芳基,Ar'是芳基或取代芳基,m为3或4,n为1至3,p为2至4。这些喹喔啉可用作漂白催化剂,特别是作为染料漂白催化剂,用于摄影银染料漂白过程。