A novel and versatile access to fluorinated carbo- and heterocyclic compounds employing electron-rich fluorodienes as cycloaddition components
摘要:
The readily accessible 2-fluoro-1-trimethylsilyloxy-1,3-dienes undergo Diels-Alder type cycloaddition with a variety of dienophiles under mild conditions. In this way, fluoro-2-cyclohexenols, fluoro-2,5-dihydropyranols, fluoro-2,5-dihydro-2-pyridinols, fluoropyridines, fluoro-3,6-dihydro-1,2-oxazines and fluoropyrroles can be efficiently prepared.
Abstract Efficient access to thermodynamically favoured silyl enol ethers deriving from α,α′-dienolizable ketones was produced via easy-made NEt3HCl-mediated isomerization of a regioisomeric mixture of O-silylated products. † deceased on 7 may 1997 § Present adress: Laboratoire de Synthese Organique, associe au CNRS, Universite du Maine, Avenue Olivier Messiaen, B.P. 9 F-72085 Le Mans (France)
摘要 通过易于制备的 NEt3HCl 介导的 O-硅烷化产物的区域异构混合物的异构化,可以有效地获得源自 α,α'-可二烯醇化酮的热力学有利的甲硅烷基烯醇醚。† 1997 年 5 月 7 日逝世 § 现地址:Laboratoire de Synthese Organique, associe au CNRS, Universite du Maine, Avenue Olivier Messiaen, BP 9 F-72085 Le Mans (France)