Singh, Vishwakarma; Chandra, Girish; Mobin, Shaikh M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2008, vol. 47, # 12, p. 1886 - 1891
A Novel and Efficient Synthesis of Bicyclo[2.2.2]octenones and Sigmatropic Shifts in Ground and Excited States: Stereoselective Route to <i>cis</i>-Decalins and Diquinane Frameworks
作者:Vishwakarma Singh、Sridhar R. Iyer、Shaikh M. Mobin
DOI:10.1021/jo048320e
日期:2005.2.1
A new and efficient synthesis of a variety of highly embellished bicyclooctenones having an endo-vinyl moiety and their sigmatropic shifts in ground and excited states leading to a stereoselective route to substituted cis-decalins and diquinane frameworks have been described. Functionalized bicyclo[2.2.2]octenones having an endo-vinyl group and a β,γ-enone chromophore were prepared by in situ generation
′I′ is all the hype: A twofold excess of iodoarene in the title reaction leads to ortho‐quinols in good yields, whereas organocatalytic versions of this reaction enable subsequent epoxidation in a regio‐ and diastereoselective fashion. Chiral iodobiarenes led to enantioselectivities up to 50 % ee. m‐CPBA=meta‐chloroperoxybenzoic acid.
Singh, Vishwakarma; Chandra, Girish; Mobin, Shaikh M., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2008, vol. 47, # 12, p. 1886 - 1891
作者:Singh, Vishwakarma、Chandra, Girish、Mobin, Shaikh M.