申请人:Zeneca Limited
公开号:US05717112A1
公开(公告)日:1998-02-10
Benzodifurantriones of Formula (1): ##STR1## in which W is unsubstituted or substituted aryl, a process for their preparation via dioxo intermediates and processes for their conversion into benzodifuranone dyes and compounds of Formula (7): ##STR2## are provided wherein R.sup.3 is --H, --COR.sup.2, --SO.sub.2 R.sup.2 -- which R.sup.2 is alkyl, cycloalkyl, aryl or aralkyl and R.sup.4 is --COOR.sup.2, --CONRR.sup.1 in which R and R.sup.1 each independently is --H, alkyl, cycloalkyl, aryl or aralkyl; --COOH or the alkali metal, alkaline earth metal or ammonium salts thereof; or --COX.sup.2 -- which X.sup.2 is halo.
提供一种公式(1)中的苯并二呋喃酮:##STR1##其中W是未取代或取代的芳基。通过二氧中间体制备它们的方法以及将它们转化为苯并二呋喃酮染料和公式(7)中的化合物的过程:##STR2##其中R.sup.3是--H,--COR.sup.2,--SO.sub.2 R.sup.2--,其中R.sup.2是烷基,环烷基,芳基或芳基烷基,而R.sup.4是--COOR.sup.2,--CONRR.sup.1,其中R和R.sup.1各自独立地是--H,烷基,环烷基,芳基或芳基烷基;--COOH或其碱金属,碱土金属或铵盐;或--COX.sup.2--,其中X.sup.2是卤素。