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Phenyliodonium zwitterions

Phenols with strong electron acceptors (usually two) are converted by DIB into isolable phenyliodonium zwitterions or salts, which may rearrange spontaneously to iododiaryl ethers (Section 10.4.3). [Pg.28]

Phenyliodonium Zwitterions Preparation. Reactivity of Iodine-Carbon Ylides. Reactivity of Iodine-Nitrogen Ylides. Reactivity of 1,4-dipoles. [Pg.225]

A palladium-catalyzed Suzuki coupling reaction of phenyliodonium zwitterions 56 with aryl boronic acids has been developed. The unique characteristics of the mild reaction conditions and convenient synthetic accessibility of phenyliodonium zwitterions make this method a valuable tool for generating diversified 3-aryl-4-hydroxy-coumarins (Equation 99) [143],... [Pg.166]

Because of the multitude and diversity of iodonium salts and zwitterions, some of which are labile or are prepared for specific purposes, their preparative methods are discussed in Chapter 8, for diaryl iodonium salts and related compounds, Chapter 9 for perfluoroalkyl, alkenyl and alkynyl phenyliodonium salts and Chapter 10 for zwitterionic iodonium compounds. In addition, the preparation of some lesser known reagents, including 2-iodosylbenzoic acid, is given in Chapter 12. [Pg.9]

See other pages where Phenyliodonium zwitterions is mentioned: [Pg.179]    [Pg.184]    [Pg.188]    [Pg.190]    [Pg.194]    [Pg.196]    [Pg.198]    [Pg.372]    [Pg.179]    [Pg.184]    [Pg.188]    [Pg.190]    [Pg.194]    [Pg.196]    [Pg.198]    [Pg.372]    [Pg.179]   


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