Hydrochloric Acid → HCID 66871873, compound

Participants

Reaction Steps

To a mixture of 2-oxo-3-hydroxy lysergic acid Nethyl N-(2-carbethoxy)ethyl amide 7 (63.6 mg, 0.15 mmol) in 5 ml of tetrahydrofuran (THF) and 5 ml of water was added solid potassium hydroxide (12.5 mg, 0.22 mmol). The reaction was stirred at room temperature for 3 hours (h) until the reaction was complete by TLC analysis. The reaction solution was neutralised to pH 7 using 1N HCl and concentrated to dryness under reduced pressure. The residue was dissolved in a 10% methanol in chloroform mixture and the inorganic salts were removed by filtration. Evaporation of the solvents yielded 2-oxo-3-hydroxy lysergic acid N-ethyl N-(2-carboxy)ethyl amide (Hapten A) (45 mg, 76%) as an amorphous brown solid (Rf 0.52 on silica using 20% methanol in chloroform as eluent). υmax/cm−1 3297, 2963, 1723, 1557, 1099, 1026, 802 (FT-IR)

Provenance & Evidence