Quinonyl-bis-thoacetic acid amides
Quinonyl-bis-thioacetic acid amides New cpds. have a p-quinone structure carrying substituents R1 and R2 in the 1- and 2-positions and substituent -S-CH2CONR3R4 in the 3- and 4-positions wherein R1 and R2 are same or different alkyl, alkoxy, opt. substd. phenyl or phenoxy residue or R1 and R2 togeth...
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Main Author | |
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Format | Patent |
Language | English German |
Published |
10.09.1970
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Subjects | |
Online Access | Get full text |
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Summary: | Quinonyl-bis-thioacetic acid amides New cpds. have a p-quinone structure carrying substituents R1 and R2 in the 1- and 2-positions and substituent -S-CH2CONR3R4 in the 3- and 4-positions wherein R1 and R2 are same or different alkyl, alkoxy, opt. substd. phenyl or phenoxy residue or R1 and R2 together can be constituents of a 5-7 membered ring, and R3 and R4 are same or different residue as H, aliphatic, opt. substd. araliphatic or 5-7 membered residue bound via an aliphatic bridge or R3 and R4 together can be constituents of a heterocyclic ring. Useful as stabilisers for photographic emulsions. |
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Bibliography: | Application Number: DE19691910894 |