Diastereoselective Synthesis of 2,6-Disubstituted 4-(Dimethoxymethyl)tetrahydropyrans Using TMSOTf-Promoted Prins-Pinacol Cyclization
摘要:
We have described a highly diastereoselective synthesis of 2,6-disubstituted 4-(dimethoxymethyl)tetrahydropyrans via TMSOTf-promoted Prins-pinacol reaction of methylene diol with acetals. This reaction provides an efficient procedure to synthesize functionalized tetrahydropyrans containing an acetal group at the C4 position with all-cis 2,4,6 relative configuration.