The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 1995
Filed:
Jan. 13, 1993
Ping-Wah Tang, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A process is disclosed for the preparation of .sup.1 H-pyrazo [1,5-b][1,2,4]triazole magenta couplers represented by formula (I): ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 each independently represents a hydrogen or a substituted or unsubstituted alkyl group, provided that R.sup.1 and R.sup.2 are not simultaneously a hydrogen atom; R.sup.6 represents a substituted alkyl, aryl, alkoxy, aryloxy or other organic functional group; L represents a substituted or unsubstituted alkylene; m is an integer greater than zero; n, y, and z each represents an integer of zero to five; and X is a coupling off group. The process comprises employing a nitrile compound of formula (II): ##STR2## as an intermediate to obtain the compounds of formula (I).