Chemoselective reductive deoxygenation of α,β-unsaturated ketones and allyl alcohols
作者:Adusumilli Srikrishna、Ranganathan Viswajanani、Jitendra A. Sattigeri、Channabasaveshwar V. Yelamaggad
DOI:10.1016/0040-4039(95)00252-8
日期:1995.3
A simple and convenient procedure for a highly chemoselective reductivedeoxygenation of α,β-unsaturated ketones and allyl alcohols to olefins by sodium cyanoborohydride and boron trifluoride etherate in dry THF is described.
furnished the chiral bicyclo[2.2.2]octenones 6, 8 and 9 and 12 and 13 containing a bridgehead methyl group via an intramolecularalkylation reaction. In an analogous manner intramolecularalkylation reaction of the bromo enones 15a–e, obtained from carvone 2 by 1,3-alkylative enone transposition (→14) followed by a regiospecific bromoetherification reaction, furnished the bicyclo[2.2.2]oct-5-en-2-ones