Proton-transfer, low self-absorbing chromophores for use in scin

Details Proton-transfer, low self-absorbing chromophores for use in scin Proton-transfer, low self-absorbing chromophores for use in scin

1995-07-26

1996-09-03

Schofer, Joseph L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549400, C07D21520, C07D31176, C07D31122

Patent

active

055525512

ABSTRACT:
Proton-transfer, low self-absorbing chromophores of the formula: ##STR1## wherein R.sub.2 and R.sub.3 are independently hydrogen, alkyl, aryl, cyano, nitro, halo or an ether group, R.sub.4 is O or N--H, and R.sub.5 is thienyl, naphthyl, furanyl, pyrrolyl, phenyl vinyl, diphenyl vinyl, phenyl ethynyl, hydroxy chromonyl phenyl, didecyloxy hydroxy chromonyl phenyl, phenyl or ##STR2## wherein R.sub.1 is vinyl, vinyl phenyl, vinyl benzyl, alkyl ethenyl, or alkyl phenyl ethenyl, provided that when R.sub.5 is phenyl and R.sub.2 and R.sub.3 are hydrogen, R.sub.4 is N--H.

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