Iridium-Catalyzed anti-Diastereo- and Enantioselective Carbonyl (α-Trifluoromethyl)allylation from the Alcohol or Aldehyde Oxidation Level
作者:Xin Gao、Yong Jian Zhang、Michael J. Krische
DOI:10.1002/anie.201008296
日期:2011.4.26
α‐trifluoromethyl allyl benzoate to alcohols in the presence of an ortho‐cyclometalated iridium catalyst results in the generation of aldehyde–allyliridium intermediates to form enantiomerically enriched products of anti‐(α‐trifluoromethyl)allylation. An identical set of products is obtained fromaldehydes under related transfer hydrogenation conditions employing isopropyl alcohol as terminal reductant.
A novel method for stereoselective synthesis of β-trifluoromethylated homoallylic alcohols in water
作者:Teck-Peng Loh、Xu-Ran Li
DOI:10.1016/s0040-4039(96)02434-3
日期:1997.2
The indium-mediated allylation reaction of aldehydes with 1,1,1-trifluoro-4-bromo-2-butene in water afforded an important trifluoromethylated building block β-trifluoromethylated homoallylic alcohol with high yield and excellent diastereoselectivity.
The indium-mediated allylation reaction of aldehydes with 4-bromo-1,1,1-trifluoro-2-butene in water afforded β-trifluoromethylated homoallylic alcohols in high yields. In most cases, high regio- and excellent diastereoselectivities were obtained.