Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-07-31
1977-06-07
Ford, John M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2602496, 2602498, C07D25144, C07D25150, C07D25170
Patent
active
040283577
ABSTRACT:
Fluorans useful as color precursors, particularly in the art of carbonless duplicating are normally colorless and are represented by the structural formula ##STR1## wherein R represents non-tertiary alkyl of one to four carbon atoms; R.sup.1 and R.sup.2 represent hydrogen or non-tertiary alkyl of one to four carbon atoms; R.sup.3 and R.sup.4 represent chlorine, NH.sub.2 or one of the groups --NR.sup.5 -(lower-alkylene)-N(R.sup.6)(R.sup.7), --NR.sup.5 -(lower-alkylene-N(R.sup.8)(R.sup.9)(R.sup.10) An, -NR.sup.5 -(lower-alkylene)-OH, -NR.sup.5 -(lower-alkylene) ##STR2## --NR.sup.5 -(HSO.sub.3 -C.sub.6 H.sub.4) or --O-(lower-alkylene)-N(R.sup.8)(R.sup.9) in which R.sup.5, R.sup.6 and R.sup.7 represent hydrogen or non-tertiary alkyl of one to four carbon atoms; R.sup.8 and R.sup.9 represent non-tertiary alkyl of one to four carbon atoms; R.sup.10 represents non-tertiary alkyl of one to four carbon atoms, benzyl or benzyl substituted in the benzene ring by one or two of halo or alkyl of one to three carbon atoms; and An represents an anion.
REFERENCES:
patent: 3183231 (1965-05-01), Buell
patent: 3867383 (1975-02-01), Winter
Fletcher Lynn T.
Ford John M.
Sterling Drug Inc.
Wyatt B. Woodrow
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