A Flexible Approach to 6,5-Benzannulated Spiroketals
作者:Zoe E. Wilson、Jonathan G. Hubert、Margaret A. Brimble
DOI:10.1002/ejoc.201100345
日期:2011.7
A novel route to simple 6,5-benzannulatedspiroketal analogues has been developed. A convergent Horner–Wadsworth–Emmons olefination enabled ready assembly of the spiroketal precursors. Use of a benzyl protecting group strategy enabled an efficient one-pot hydrogenation/deprotection/spiroketalisation process to be employed providing a robust method to access a range of substituted aromatic monobenzannulated