The reactivity of a series of polyfluorinated 2-alkynylanilines with various alcohols using p-TSA has been studied. It was found that hydration of the triple bond gave rise to polyfluorinated 2-aminoarylketones and competed with an electrophilic heterocyclization reaction leading to polyfluorinated indoles. The dependence of the reaction pathways on the nature of the alkynylaniline substituents has
Synthesis of polyfluorinated ortho-alkynylanilines
作者:Larisa V. Politanskaya、Igor P. Chuikov、Еkaterina А. Kolodina、Mark S. Shvartsberg、Vitalij D. Shteingarts
DOI:10.1016/j.jfluchem.2011.09.008
日期:2012.3
A series of polyfluorinated ortho-alkynylanilines – the versatile building blocks for diverse polyfluorobenzo azaheterocycles – have been synthesized by the Sonogashira reaction of polyfluorinated ortho-iodanilines with terminal alkynes.
Synthesis of indoles with a polyfluorinated benzene ring
作者:Larisa V. Politanskaya、Igor P. Chuikov、Vitalij D. Shteingarts
DOI:10.1016/j.tet.2013.07.037
日期:2013.9
A two-step sequence consisting of a Sonogashiracoupling of polyfluorinated 2-iodoanilines with terminal alkynes, followed by a KOH promoted cyclization of the 2-alkynylanilines thus formed, has been developed as a one-potsynthesis of 2-R-indoles (R=n-Bu, Ph, CH2OTHP→CH2OH, C(CH3)2OH→H) containing a polyfluorinated benzene moiety.