Abstract: A compound of the formula: ##STR1## wherein, Z.sup.1 and Z.sup.2 are each independently - O -, - S - or - NR.sup.5 - in which R.sup.5 is H or an optionally-substituted hydrocarbon group or an acyl group;X.sup.1 and X.sup.2 are selected from H, halogen, cyano, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, aryl, carbamoyl, sulphamoyl, carboxylic acid or carboxylic acid ester;R.sup.1 to R.sup.4 are each independently selected from H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, C.sub.1-4 -alkenyl, halogen and the group - X - Y;X is - O - or - S -; andY is C.sub.2-10 -alkenyl provided that,the substituents on rings A and B are different when Z.sup.1 and Z.sup.2 are the same or that Z.sup.1 and Z.sup.2 are different when the substituents on rings A and B are the same,which is suitable for the coloration of synthetic textile materials and processes for its preparation.

Abstract: A novel hetero-polycyclic compound of the following formula, a method for its preparation and its use in the coloration of textile materials: ##STR1## wherein, Z.sup.1 & Z.sup.2 are each independently --O--, --S-- or --NR.sup.5 -- in which R.sup.5 is H or an optionally-substituted hydrocarbon group or an acyl group;X.sup.1 & X.sup.2 are selected from H, halogen, cyano, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, aryl, carbamoyl, sulphamoyl, carboxylic acid or carboxylic acid ester;R.sup.1 to R.sup.4 are each independently selected from H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, C.sub.1-4 -alkenyl, halogen and the group --X--Y;X is --O-- or --S--; andY is a group of the formula: ##STR2## wherein: V & W are each independently H or optionally substituted alkyl;p is an integer from 1 to 3;q is 0 or 1;p+q is at least 2; andZ is OR.sup.6 or NR.sup.6 R.sup.7 when q=1;or Z is OR.sup.8 or SR.sup.8 when q=0;wherein:R.sup.