Ammonium Chloride → 3-(3-Quinolyl)-2-Propyn-1-ol Diisopropyl Carbamate

Participants

Reaction Conditions

Reaction Steps

To a dry three-necked round-bottom flask equipped with nitrogen inlet and overhead stirrer was charged 3-(3-quinolyl)-2-propyn-1-ol (2 g, 10.8 mmol) (Scheme 1, Compound (3)) in THF (20 ml) and the solution was cooled to 0° C. Potassium t-butoxide (1.34 g, 11.9 mmol) was then added followed by diisopropylcarbamoyl chloride (1.65 g, 11.9 mmol). The mixture was stirred for 2 h at 0° C. and then allowed to warm up to room temperature over a period of 6 hours by which time the reaction was determined to be complete. The reaction mixture was worked up with MTBE (50 ml) and 10% NH4Cl (25 ml) and was concentrated to an orange oil. Yield=3.3 g(100%)

Provenance & Evidence