- The Preparation of Sodium 4-Amino-3-nitrobenzenesulfonate and Some Related Compounds
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The sodium salt of 4-amino-3-nitrobenzenesulfonic acid (o-nitroaniline-p-sulfonic acid) has been prepared by the action of dilute sodium hydroxide solution on ethyl carbamate.Central to this synthesis is the finding that the N-ethoxycarbonyl group, when located ortho to a nitro group (but not to a bromo group), is readily removed by dilute sodium hydroxide solution.
- Rosevear, Judi,Wilshire, John F. K.
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p. 1727 - 1732
(2007/10/02)
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- REACTION OF 2,4-DISUBSTITUTED CHLOROBENZENES WITH 3-ALKYLAMINO- AND 3-DIALKYLAMINOPROPIONITRILES
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The reaction of 2,4-disubstituted chlorobenzenes with 3-dialkylaminopropionitriles at 65-170 deg C leads to the formation of 2,4-disubstituted N,N-dialkylanilines, and the reaction with 3-alkylaminopropionitriles at 20-130 deg C leads to the formation of 2,4-disubstituted N-alkyl-N-β-cyanoethylanilines.In addition, in the latter case at high temperature (130 deg C) the cyanoethyl group is removed from the substituted N-alkyl-N-β-cyanoethylaniline with the formation of the 2,4-disubstituted N-alkylaniline.
- Plakidin, Val. L.,Vostrova, V. N.
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p. 295 - 303
(2007/10/02)
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