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Synthesis 2013; 45(1): 127-133
DOI: 10.1055/s-0032-1316823
DOI: 10.1055/s-0032-1316823
paper
Regioselective Aromatic Nucleophilic Substitution in N-Aryl-2-nitrosoanilines with Oxygen and Nitrogen Nucleophiles
Further Information
Publication History
Received: 16 October 2012
Accepted after revision: 10 November 2012
Publication Date:
29 November 2012 (online)
Abstract
Aromatic nucleophilic substitution of halogens in N-aryl-2-nitrosoanilines with ammonia, alkylamines and alkoxide ions proceeds efficiently and highly regioselectively in the position para to the nitroso group. When two halogen atoms ortho and para are present, the latter is substituted exclusively. Oxidative substitution of hydrogen at the unsubstituted ortho position of the nitrosoaniline ring does not compete with substitution of para halogen atoms. The reaction allows the synthesis of N-aryl-2-nitrosoanilines which cannot be obtained according to known methods.
Supporting Information
- for this article is available online at http://www.thieme-connect.com/ejournals/toc/synthesis.
- Supporting Information
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