PdII- and PtII-Mediated Polycyclization Reactions of 1,5- and 1,6-Dienes: Evidence in Support of Carbocation Intermediates
作者:Jeong Hwan Koh、Michel R. Gagné
DOI:10.1002/anie.200453913
日期:2004.6.28
Pd(II)-Catalyzed cyclogeneration of carbocations: subsequent rearrangement and trapping under oxidative conditions
作者:Jeong Hwan Koh、Cheryl Mascarenhas、Michel R. Gagné
DOI:10.1016/j.tet.2004.06.023
日期:2004.8
A catalytic oxidative polycyclization reaction initiated by the carbocyclization of 1,5-dienes with Pd(II) is reported. Trapping of a putative carbocation with suitable functional groups (phenols, alkenes, alcohols, sulfonamide), or rearrangement protocols (Pinacol) yields poly-cyclic products in good yields and in excellent diastereoselectivities. Turnover of the intermediate Pd–C bond is via β-H