Total facial selectivity in 2π+4π reactions of (2R,4S,5R)-4-((E)-((4-Methoxyphenyl)imino)methyl)-2-phenyl-1,3-dioxan-5-ol to electron-rich dienophiles

The FCT for financial support PTDC/EQF-MED/1671/2012, the national network of NMR (PTNMR, Bruker Avance III 400-Univ. Minho) and FEDER-COMPETE-QREN-EU funding the Department Chemistry-UM.