申请人:Imperial Chemical Industries PLC
公开号:US05189181A1
公开(公告)日:1993-02-23
A process for the preparation of a polycyclic dye of the Formula (1): ##STR1## by reacting a substituted acetic acid of the Formula (2): ##STR2## with a compound of the Formula (3): ##STR3## and oxidation of the intermediate leuco compound to dehydrogenate the peripheral heterocyclic rings wherein Y is an optionally substituted aromatic or heteroaromatic radical; Ring A is unsubstituted or is substituted by from one to five groups; Z is --NR.sup.1 R.sup.2 ; R.sup.1 and R.sup.2 are each independently H or are independently selected from optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl and heteroaryl; or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring; or R.sup.1 and R.sup.2 each independently together with the nitrogen to which they are attached and the adjacent carbon atom of Ring B form a heterocyclic ring; and X.sup.1 and X.sup.2 are each independently selected from H, halogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted heteroaryl, cyano, carbamoyl, sulphamoyl, carboxylic acid and carboxylic acid ester, a process for the preparation of the substituted acetic acid of Formula (2) and certain novel substituted acetic acids of Formula (2).
一种制备式(1)多环染料的方法:通过使式(2)取代的乙酸与式(3)化合物反应,并将中间体隐色化合物氧化以脱氢边缘杂环,其中Y是可选地取代的芳香族或杂芳香族基团;环A是不取代的或由一个到五个组取代的;Z是-NR1R2;R1和R2各自独立为H或各自独立选自可选取代的烷基、烯基、环烷基、芳烷基、芳基和杂芳基;或者R1和R2与它们所连接的氮原子一起形成一个杂环;或者R1和R2各自独立地与它们所连接的氮和环B的相邻碳原子形成一个杂环;X1和X2各自独立选自H、卤素、可选取代的烷基、可选取代的芳基、可选取代的杂芳基、腈、碳酸酯、磺酰胺、羧酸和羧酸酯,一种制备式(2)取代乙酸的方法和某些新型的式(2)取代乙酸。