5-Hexanoyl-4-hydroxy-6-pentyl-2-pyrone (16) 26 (0.050 g, 0.178 mmol), triethylsilane (0.125 mL, 0.774 mmol) and LiClO4 (0.2 mg, 0.00188 mmol) were dissolved in TFA (1.2 mL) and left stirring at room temperature for 23 h.
5-Hexanoyl-4-hydroxy-6-pentyl-2-pyrone (16)26 (0.050 g,0.178 mmol), triethylsilane (0.125 mL, 0.774 mmol) andLiClO4 (0.2 mg, 0.00188 mmol) were dissolved in TFA(1.2 mL) and left stirring at room temperature for 23 h.