62119-69-1Relevant articles and documents
Coumarins containing sulphonylamino groups
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, (2008/06/13)
Coumarins of the formula STR1 wherein R denotes an alkyl radical with 1 to 4 C atoms, which is optionally substituted by halogen atoms or a phenyl radical which is optionally substituted by halogen, C1 -C4 -alkyl or C1 -C4 -alkoxy and R' represents hydrogen, a phenyl radical which is optionally substituted by nitro, C1 -C4 alkyl, halogen or C1 -C4 -alkoxy, the tetralin-6-yl radical or an aromatic heterocyclic radical which is bonded via C or N and which can contain further substituents, for example C1 -C4 -alkyl groups and halogen atoms Are valuable intermediates for the production of dyestuffs and optical brightening agents.