A New Synthesis of 8-Oxabicyclo[3.2.1]octan-2-one and Its Use for the Preparation of Cycloheptane Annulated Furans
作者:Henning Hopf、K. Abhilash
DOI:10.1055/s-0029-1218371
日期:2009.12
Two novel syntheses of 8-oxabicyclo[3.2.1 ]octan-2-one are described, making this key intermediate readily available in preparative amounts. On chain elongation with various oxophosphonates this compound is converted to α,β-unsaturated ketones, which, on treatment with BF 3 ·OEt 2 , cyclize to furanocycloheptanols with a substitution pattern not reported previously.