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US 2003/0109716 A1Published application
5-acylamino-2-amino-4-substituted-phenol compounds and method of using them
AssigneeEastman Kodak Company
InventorChang-Kyu Kim
Life of this patent
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Abstract
Disclosed is a 2-amino-5-acylamino-4-substituted-phenol compound having the structural formula I: 1 wherein Y is a substituent group, and R′ is a ballast group. Also disclosed is a simplified method for preparing a photographic coupler using this compound.
Claims14
A 2-amino-5-acylamino-4-substituted-phenol compound having the structural formula I:
- 8
- wherein
- Y is a substituent group, and
- R′ is a substituent group.
1 more element
Dependencies are inferred from the claim text.