Sodium Bicarbonate → HCID 15171473, compound

Participants

Reaction Steps

A 1M solution (15 ml) of tetrabutylammonium fluoride in tetrahydrofuran was added dropwise to a solution of 3-dimethylaminoethyl-5-(3-t-butyldimethylsilyloxypropyl)-2-(3-pyridyl)thiazolidin-4-one (2.6 g, 6.02 mmol) of dry tetrahydrofuran (12 ml) under cooling with ice. Then the mixture was stirred at room temperature for 2 hours to complete the reaction. Saturated aqueous NaHCO3 (10 ml) was added dropwise to the product mixture, and the resulting aqueous layer was extracted 6 times with ethyl acetate. The extract was dried over MgSO4, and the solvent was removed under reduced pressure. The residual crude product was purified by medium-pressure liquid chromatography (Si-60® Art. 9385, eluent : hexane : ethanol : aqueous ammonia=3000:400:50), giving 3-dimethylaminoethyl-5-(3-hydroxypropyl)-2-(3-pyridyl)thiazolidin-4-one (1.7 g, 88% yield). IR (CHCl3) [cm-1 ]; 3400 (br), 1670, 1595, 1580, 1360. NMR (CDCl3) [δ ppm]; 2.16 (6 H, s), 4.10-4.15 (1 H, m), 5.86 (1 H, d, J=2 Hz).

Provenance & Evidence