Oxidative rearrangement of 2-alkoxy-3,4-dihydro-2H-pyrans: stereocontrolled synthesis of 4,5-cis-disubstituted tetrahydrofuranones including whisky and cognac lactones and crobarbatic acid - Armstrong, A; Ashraff, C; Chung, H; Murtagh, L (TETRAHEDRON, 2009)