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)