One-Pot Synthesis of Functionalized 3-(Trifluoromethyl)phenols by [3+3] Cyclization of 1,3-Bis(silyl enol ethers) with α,β-Unsaturated Trifluoromethyl Ketones
作者:Constantin Mamat、Thomas Pundt、T. H. Tam Dang、Renske Klassen、Helmut Reinke、Martin Köckerling、Peter Langer
DOI:10.1002/ejoc.200700801
日期:2008.1
Functionalized 3-(trifluoromethyl)phenols were prepared by formal [3+3] cyclization of 1,3-bis(silyl enol ethers) with readily available open-chained and cyclic α,β-unsaturated trifluoromethyl ketones. The reaction of 3,4-dihydro-5-(trifluoroacetyl)-2H-pyran with 1,3-bis(silyl enol ethers) resulted in a domino process to give new functionalized dihydropyrans. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451
功能化的 3-(三氟甲基)苯酚是通过 1,3-双(甲硅烷基烯醇醚)与容易获得的开链和环状 α,β-不饱和三氟甲基酮的形式 [3+3] 环化制备的。3,4-二氢-5-(三氟乙酰基)-2H-吡喃与1,3-双(甲硅烷基烯醇醚)的反应导致多米诺过程以产生新的官能化二氢吡喃。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)