A One-Pot Approach to Δ2-Isoxazolines from Ketones and Arylacetylenes
摘要:
The sequential reaction of ketones with arylacetylenes and hydroxylamine in the presence of KOBut/DMSO followed by the treatment of the reaction mixture with H2O and KOH leads to Delta(2)-isoxazolines in up to 88% yield.
Base-Catalyzed Stereoselective Vinylation of Ketones with Arylacetylenes: A New C(sp3)C(sp2) Bond-Forming Reaction
作者:Boris A. Trofimov、Elena Yu. Schmidt、Igor' A. Ushakov、Nadezhda V. Zorina、Elena V. Skital'tseva、Nadezhda I. Protsuk、Al'bina I. Mikhaleva
DOI:10.1002/chem.201000227
日期:——
those with condensed aromatic moieties, are readily vinylated with arylacetylenes (KOH/DMSO, 100 °C, 1 h) to give regio‐ and stereoselectively the (E)‐β‐γ‐ethylenic ketones ((E)‐3‐buten‐1‐ones) in 61–84 % yields and with approximately 100 % stereoselectivity. This vinylation represents a newC(sp3)C(sp2) bond‐forming reaction of high synthetic potential.
A One-Pot Approach to Δ<sup>2</sup>-Isoxazolines from Ketones and Arylacetylenes
作者:Elena Yu. Schmidt、Inna V. Tatarinova、Elena V. Ivanova、Nadezhda V. Zorina、Igor’ A. Ushakov、Boris A. Trofimov
DOI:10.1021/ol303132u
日期:2013.1.4
The sequential reaction of ketones with arylacetylenes and hydroxylamine in the presence of KOBut/DMSO followed by the treatment of the reaction mixture with H2O and KOH leads to Delta(2)-isoxazolines in up to 88% yield.