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。