| abstract |
COMPOUNDS OF THE FORMULA 7-(R1-N(-R2)-)-2H-CHROMENE WHEREIN R1 AND R2 EACH REPRESENT A HYDROGEN ATOM OR A SUBSTITUTED OR UNSUBSTITUTED ALKYL OR A CYCLOAKLYL GROUP, OR R1 AND R2 CAN FORM A HETEROCYCLIC RING TOGETHER WITH THE NITROGEN ATOM ATTACHED TO THE CUMARIN RESIDUE, AND RING A REPRESENTS A SUBSTITUTED OR UNSUBSTITUTED BENZENE RING OR A NAPHTHALENE RING ARE DISCLOSED. THEY CAN BE EMPLOYED FOR DYEING HYDROPHOBIC FIBERS A CLEAR YELLOW TONE WITH GOOD FASTNESSES. 2-(O=),3-(4-(O=),5,6-(-A-)-3,4-DIHYDROPYRIMIDIN-2-YL), |