C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
42/14, 42/3, 260
C07D 209/14 (2006.01) B41M 5/136 (2006.01) B41M 5/323 (2006.01) C07D 209/12 (2006.01) C07D 403/06 (2006.01)
Patent
CA 1151173
ABSTRACT OF THE DISCLOSURE Aldehyde or ketone 0-[(3-indoly)(aryl or heteroaryl)- methyl]oxiames which are useful as color-formers in pressure- sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting 3-[(arylsulfonyl)(aryl or hetero- aryl)methyl]-1H-indoles with aldehyde or ketone oximes in the presence of a base.
372330
Hung William M.
Schmidt Paul J.
Fetherstonhaugh & Co.
Sterling Drug Inc.
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