L-Proline → HCID 178469805, compound

Participants

Reaction Steps

To a solution of ethyl 2-[(trans-4-hydroxycyclohexyl)amino]-4-oxo-4,5-dihydrofuran-3-carboxylate (0.30 g, 1.1 mmol) which similarly prepared according to the procedure described in the Example 4, First step and 7-azaindole-3-carboxaldehyde (0.16 g, 1.1 mmol) in ethanol (20 mL), L-proline (0.013 g, 0.11 mmol) was added at ambient temperature. The mixture was refluxed for 2 days. Cooled to ambient temperature, the precipitate was collected by filtration, washed with methanol then dried to afford the titled compound as solid (0.14 g, y. 40%).

Provenance & Evidence