... The Journal of Organic ... The crude product was then purified on silica gel (20% ethyl acetate/hexanes) to afford 97 mg (75%) of 3m as a white solid: mp 51 °C; R f = 0.18 (20% ethyl acetate/hexanes); 1 H NMR (400 ... (1) Shiina, I. In Modern Aldol Reactions; Mahrwald, R., Ed.; Wiley ...