Table 2.

Deprotection to β- and ortho-Hydroxy Ketones^a

entry	starting material	product	yield
1			80%
2			56%
3			83%
4			89%

^aConditions entries 1–3 (one pot): K₂CO₃ (3 × 0.15 equiv/2.5 h), MeOH, 25 °C, then 3.5 equiv NaHSO₃, H₂O, 80 °C, 3 h; Conditions entry 4 (two steps): (i) 0.15 equiv K₂CO₃, MeOH, 25 °C, 1 h, then (ii) 3.5 equiv NaHSO₃, H₂O, EtOH, 90 °C, 12 h.