Abstract
Hypervalent iodine(III) compounds containing iodine-nitrogen bonds are very attractive amination reagents in organic synthesis. Heteroaromatic (aryl)iodonium imides containing a iodine-nitrogen bond and a hypervalent iodine(III) atom were prepared from heteroarenes, bis(sulfon)imides and (diacetoxyiodo)arenes under mild conditions. These compounds were stable under air and in organic solvents, and could be easily purified by precipitation. X-ray crystal structure analysis indicated that the structure of N-pivaloyl indolyl(phenyl)iodonium bis(tosyl)imides and N-pivaloyl indolyl(2-butoxyphenyl)iodonium bis(tosyl)imides was a dimer with a T-shaped geometry at the iodine atom linked to an indole group and a bis(tosyl)imide by a monomer unit. Moreover, the use of substituted iodoarenes facilitated the purification of some of the heteroaromatic (aryl)iodonium imides.
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