α-Vinylation of 1,3-Dicarbonyl Compounds with Alkenyl(aryl)iodonium Tetrafluoroborates: Effects of Substituents on the Aromatic Ring and of Radical Inhibitors
1,3-dicarbonyl compounds with 4-tert-butyl-1-cyclohexenyl(aryl)iodonium 2 and 1-cyclopentenyl(aryl)iodonium tetrafluoroborates 3 are reported. Frequently, alpha-phenylations compete with the vinylations in the reaction of 1,3-dicarbonyl compounds with alkenyl(phenyl)iodoniumsalts 2a and 3a. Use of alkenyl(p-methoxyphenyl)iodoniumsalts 2b and 3b, however, leads to selective alpha-vinylation at the
Metal-Free <i>C</i>-Arylation of Nitro Compounds with Diaryliodonium Salts
作者:Chandan Dey、Erik Lindstedt、Berit Olofsson
DOI:10.1021/acs.orglett.5b02270
日期:2015.9.18
An efficient, mild, and metal-free arylation of nitroalkanes with diaryliodonium salts has been developed, giving easy access to tertiary nitrocompounds. The reaction proceeds in high yields without the need for excess reagents and can be extended to α-arylation of nitroesters. Nitroalkanes were selectively C-arylated in the presence of other easily arylated functional groups, such as phenols and