79792-95-3Relevant articles and documents
Visible-Light-Promoted Remote C-H Functionalization of o-Diazoniaphenyl Alkyl Sulfones
Du, Shaofu,Kimball, Elizabeth Ann,Ragains, Justin R.
supporting information, p. 5553 - 5556 (2017/10/25)
Visible-light irradiation of ortho-diazoniaphenyl alkyl sulfones in the presence of Ru(bpy)32+ results in remote Csp3-H functionalization. Key mechanistic steps in these processes involve intramolecular hydrogen atom transfer from Csp3-H bonds to aryl radicals to generate alkyl/benzyl radicals. Subsequent polar crossover occurs by single-electron oxidation of the alkyl/benzyl radicals to carbenium ions that then intercept nucleophiles. We have developed remote hydroxylations, etherifications, an amidation, and C-C bond formation processes using this strategy.
KF-alumina immobilized in ionic liquids: A novel heterogeneous base for heterocyclization of alkylsulfanylphenylamines into 1,4-benzothiazine
Chhikara, Bhupender S.,Mishra, Anil K.,Tandon, Vibha
, p. 1057 - 1065 (2007/10/03)
A rapid and convenient synthetic methodology for the cyclocondensative transformation of various alkylsulfanylphenylamines with bromoacetyl bromide by supporting on KF-alumina in ionic liquids [bmim] [Br] and [bmim][BF 4] has been developed to obtain 3-oxo-1,4-benzothiazine in good yields. The product is easily obtained by extraction with ethyl acetate and concentrating under vacuum. Easy recovery of ionic liquid and use in consecutive reactions is also reported.
Diagnostic radiopharmaceutical compounds (That)
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, (2008/06/13)
Tetradentate ligands are used to form neutral 99m-technetium complexes which may be useful as radiopharmaceuticals e.g. as brain imaging agents. The ligands have the structure STR1 where n is 2 or 3, m is 0-4, R is H or substituted or unsubstituted C1 -C6 alkyl, provided that one CR2 group adjacent the starred nitrogen atom represents CO and forms with the adjacent N atom, a --CONH-- amide group, Y is unsubstituted or substituted C1 -C6 alkyl, and one of X and X' represents H or a labile thiol protecting group while the other is unsubstituted or substituted C1 -C6 alkyl, alkenyl or alkynyl.