5-methoxypent-3-yn-2-one

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 5-methoxypent-3-yn-2-one (1.2 g, 10.7 mmol) in 90% ethanol (22 mL), cyanoacetamide (1.08 g, 12.85 mmol) and piperidine acetate {prepared by the addition of piperidine to a solution of acetic acid (0.5 mL) in water (1 mL) till pH 8} were added and reaction heated at 90° C. for 16 h. On completion, ethanol was evaporated and water was added to residue. Solid obtained was filtered and washed with water. Then this solid was stirred with acetonitrile for 10 min and filtered again to obtain the desired intermediate (0.165 g, 8.68%). were added reaction On completion, ethanol was evaporated water was added to residue Solid obtained was filtered washed with water filtered again

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 5-methoxypent-3-yn-2-one (1.2 g, 10.7 mmol) in 90% ethanol (22 mL), cyanoacetamide (1.08 g, 12.85 mmol) and piperidine acetate {prepared by the addition of piperidine to a solution of acetic acid (0.5 mL) in water (1 mL) till pH 8} were added and reaction heated at 90° C. for 16 h. On completion, ethanol was evaporated and water was added to residue. Solid obtained was filtered and washed with water. Then this solid was stirred with acetonitrile for 10 min and filtered again to obtain the desired intermediate (0.165 g, 8.68%). were added reaction On completion, ethanol was evaporated water was added to residue Solid obtained was filtered washed with water filtered again

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 5-methoxypent-3-yn-2-one (1.2 g, 10.7 mmol) in 90% ethanol (22 mL), cyanoacetamide (1.08 g, 12.85 mmol) and piperidine acetate {prepared by the addition of piperidine to a solution of acetic acid (0.5 mL) in water (1 mL) till pH 8} were added and reaction heated at 90° C. for 16 h. On completion, ethanol was evaporated and water was added to residue. Solid obtained was filtered and washed with water. Then this solid was stirred with acetonitrile for 10 min and filtered again to obtain the desired intermediate (0.165 g, 8.68%). were added reaction On completion, ethanol was evaporated water was added to residue Solid obtained was filtered washed with water filtered again