77721-47-2Relevant articles and documents
Hypervalent iodine-induced nucleophilic substitution of para-substituted phenol ethers. Generation of cation radicals as reactive intermediates
Kita, Yasuyuki,Tohma, Hirofumi,Hatanaka, Kenji,Takada, Takeshi,Fujita, Shigekazu,Mitoh, Shizue,Sakurai, Hiromu,Oka, Shigenori
, p. 3684 - 3691 (2007/10/02)
A novel hypervalent iodine induced nucleophilic substitution of para-substituted phenol ethers in the presence of a variety of nucleophiles is described. UV and ESR spectroscopic studies indicate that this reaction proceeds via cation radicals, [ArH?+], as reactive intermediates generated by single-electron transfer (SET) from a charge-transfer (CT) complex of phenol ethers with phenyliodine(III) bis(trifluoroacetate) (PIFA). This is the first case that involves a radical intermediate on hypervalent iodine oxidations of aromatic compounds.
