Hydrochloric Acid → HCID 20183530, compound

Participants

Reaction Steps

The product of step (c) (0.6 g, 0.0024 M), dimethyl acetylene dicarboxylate (0.33 ml, 0.0027 M) and "Triton B" (2 drops) were heated under reflux for 6 hours in dry ethanol (10 ml). The reaction mixture was cooled, NaOH (0.6 g, 14.6 mmol) in water (6 ml) was added and refluxing continued for 1 hour. The whole was cooled, poured into dil. HCl, extracted into ethyl acetate and washed with brine before drying over MgSO4 and evaporating to dryness to yield the sub-title compound as a pale yellow solid, 0.7 g, (86%).

Provenance & Evidence