Stereocontrolled Synthesis of Contiguous C(sp<sup>3</sup>)−C(aryl) Bonds by Lanthanide(III)-Catalyzed Domino Aryl-Claisen [3,3]-Sigmatropic Rearrangements
作者:Timothy R. Ramadhar、Jun-ichi Kawakami、Alan J. Lough、Robert A. Batey
DOI:10.1021/ol1018147
日期:2010.10.15
A domino [3,3]-sigmatropic aryl-Claisen rearrangement of cyclic and acyclic bisaryloxy-substituted alkenes can be performed in high yield by using Ln(fod)3 catalysis to obtain bisphenolic products incorporating two contiguous aryl−C(sp3) bonds. Stereospecific rearrangement was observed for cyclic substrates. The precursordiaryl ethers were typically synthesized from the corresponding diols by double