Sodium Hydroxide → HCID 11236549, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of N-methyl prolinol (0.226 g, 1.96 mmol) and sodium hydroxide (79 mg, 1.96 mmol) in benzene (10 mL) was heated to reflux for 2 hours with stirring under nitrogen atmosphere and then cooled to 25° C. followed by the addition of compound 133 (0.25 g, 0.65 mmol) at same temperature. The mixture was heated to reflux for 6 hours, concentrated under vacuum and diluted with water (3 mL). The gum which separated was collected (by decanting out the liquid portion) and purified by column chromatography (1-3% MeOH—CHCl3) to afford the title compound E25 as a semi-solid (0.06 g, 20%). HPLC: Symmetry shield RP18 (250×4.6 mm) 5 microns [solvent A=0.01 M KH2PO4 (pH 3.0); solvent B=CH3CN], Gradient elution program: T/% B=0/35, 10/35, 40/80, 50/80, 55/35, 60/35; 270 nm, Rt 15.51 min, 99.55% purity; MS (CI): m/z 461 (M+H, 100).

Provenance & Evidence