Several coumarins have been synthesised by Knoevenagel condensation in the piperidine/HOAc/moisture stable room temperature ionic liquid ([Emim] + BF 4 - referring to structure) system at room temperature; the yield of the reaction is good and the reaction medium can be recycled.
No takes yet. Share an insight, caveat, or question.
Bao et al. (2003) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: