Ketene thioacetal route to .gamma.-lactones. Effect of carbonyl hardness on reaction-site selectivity and a unique preparation of 3-methyl-5-phenyl-2(5H)-furanone
Ketene thioacetal route to .gamma.-lactones. Effect of carbonyl hardness on reaction-site selectivity and a unique preparation of 3-methyl-5-phenyl-2(5H)-furanone