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Synthesis of benzosultams via an intramolecular sp(2) C-H bond amination reaction of o-arylbenzenesulfonamides under metal-free conditions.
|Title||Synthesis of benzosultams via an intramolecular sp(2) C-H bond amination reaction of o-arylbenzenesulfonamides under metal-free conditions.|
|Publication Type||Journal Article|
|Year of Publication||2014|
|Authors||Li Y, Ding Q, Qiu G, Wu J|
|Journal||Organic & biomolecular chemistry|
|Date Published||2014 Jan 7|
A practical synthetic method for the generation of benzosultams via an intramolecular sp(2) C-H bond amination reaction of o-arylbenzenesulfonamides with PhI(OAc)2-I2 under metal-free conditions is developed. A broad range of substrates are tolerated under mild reaction conditions, affording bioactive benzosultams in good to excellent yields. The resulting benzothiazines could be conveniently transformed into their corresponding iodinated derivatives via electrophilic substitution reactions.
|Alternate Journal||Org. Biomol. Chem.|