5465-16-7Relevant academic research and scientific papers
Facile preparation and chemical transformations of spirocyclopropane-annelated heterocycles
De Meijere, Armin,Kuchuk, Ilya D.,Sokolov, Viktor V.,Labahn, Thomas,Rauch, Karsten,Es-Sayed, Mazen,Kraemer, Thomas
, p. 985 - 997 (2007/10/03)
A productive approach has been developed to spirocyclopropane-annelated 1,4-benzoxathiane 17 (85%), 1,4-benzothiazines 20-22 (56-88%) and 1,4-benzoxazines 25, 26 (55-71%), through Michael additions of binucleophilic o-hydroxythiophenol 15, o-aminothiophen
Use of 2-(sulphonylamino) phenols as couplers in oxidation colouring
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, (2008/06/13)
The invention relates to the field of the oxidation dyeing of keratinous fibres and in particular of human keratinous fibers, such as the hair. The invention relates more particularly to the use of certain 2-(sulphonylamino)phenols of following formula (I) as coupler in combination with oxidation dye precursors for 1the oxidation dyeing of the fibers.
1-Phenylsulfonylbenzotriazole: A novel and convenient reagent for the preparation of benzenesulfonamides and aryl benzenesulfonates
Katritzky,Zhang,Wu
, p. 205 - 216 (2007/10/02)
Readily available 1-phenylsulfonylbenzotriazole smoothly converts various aliphatic and aromatic amines and phenols into the corresponding benzenesulfonamides and benzenesulfonates in good yields.
On the mechanism of the reaction of o-benzenesulfonamide-p-benzoquinone with ammonia and amines
Gundisch,Kovar
, p. 55 - 59 (2007/10/02)
In the determination of ammonia in sera using o-benzenesulfonamido-p-benzoquinone proteins cause false positive results. These findings contradict the reaction mechanism postulated in lit., according to which a dimer is formed through an NH-bridge. As ded
