Trifluoromethylated Vinylic and Aromatic Compounds from α-(Trifluoromethyl)allyl Alcohols
作者:Bernard R. Langlois、Sylvie Radix-Large、Stéphanie Kucharski
DOI:10.1055/s-2004-815928
日期:——
α-(Trifluoromethyl)allylalcohols, easily available from α,β-unsaturated carbonyl compounds, are readily converted into γ-(trifluoromethyl)allyl thioethers, benzyl ethers, trifluoroacetates, and azides. A phenyl substituent at the γ-position to the hydroxyl function enhances their reactivity and the ease of S N 2' or S N 1' substitutions, whereas a phenyl ring at the u-position allows the BF 3 -mediated
α-(三氟甲基)烯丙醇很容易从 α,β-不饱和羰基化合物中获得,很容易转化为 γ-(三氟甲基)烯丙基硫醚、苄基醚、三氟乙酸酯和叠氮化物。羟基官能团的 γ 位上的苯基取代基增强了它们的反应性和 SN 2' 或 SN 1' 取代的容易程度,而 u 位上的苯环允许 BF 3 介导的 (三氟甲基) 茚的合成。4-烷基-4-甲氧基-1-(三氟甲基)环六-2,5-二烯醇,很容易从4-烷基苯酚中获得,很容易转化为带有亲核取代基(MeO,Cl)的4-烷基(三氟甲基)苯。环或苄基位置。