3577-63-7Relevant articles and documents
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Harris,Sweet
, p. 2893 (1955)
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Practical azidation of 1,3-dicarbonyls
Harschneck, Tobias,Hummel, Sara,Kirsch, Stefan F.,Klahn, Philipp
supporting information; experimental part, p. 1187 - 1193 (2012/03/11)
An operationally simple, direct azidation of 1,3-dicarbonyl compounds has been developed. The reaction proceeds readily under ambient conditions using sodium azide and an iodine-based oxidant such as I2 or 2-iodoxybenzoic acid (IBX)-SO3K/NaI. In particular, the latter method, as a new and well-balanced oxidizing agent, shows excellent functional group tolerance and substrate scope and thus allows access to a variety of tertiary 2-azido and 2,2-bisazido 1,3-dicarbonyl compounds that would be more difficult to access by using traditional methods. Because the azide-containing products easily undergo 1,3-dipolar cycloaddition with alkynes, our report represents a novel route to analogues of sensitive complex molecules. Click into place! An operationally simple, direct azidation of 1,3-dicarbonyl compounds has been developed (see scheme). The reaction proceeds readily under ambient conditions using sodium azide and an iodine-based oxidant, such as I2 or 2-iodoxybenzoic acid (IBX)-SO3K/NaI. The oxidative methods show excellent functional-group tolerance and substrate scope and thus allow access to a variety of tertiary 2-azido and 2,2-bisazido 1,3-dicarbonyl compounds. Copyright
Sulfonation of arylamines Part 9 - Solid state synthesis of di-ortho ring substituted aminobenzenesulfonic acids
Singh, Gurdip,Kapoor, Inder Pal Singh,Singh, Jyotsna
, p. 1114 - 1117 (2007/10/03)
Di-ortho ring substituted arylammonium sulfates (Di-o-RSAS) have been prepared from the corresponding arylamines by treatment with conc. H2SO4 and characterized by elemental, gravimetric and spectral analyses. These sulfates yield the corresponding ring substituted aminobenzenesulfonic acids (RSABSA) when subjected to thermal energy. Non-isothermal gravimetric studies on di-o-RSAS support the formation of RSABSA. It is observed that most of the salts undergo transformation to acid in solid state via proton transfer reaction prior to sulfonation.
