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Abstract
The Knoevenagel condensation of Meldrum's acid with aromatic aldehydes proceeded efficiently in the recyclable ionic liquid [bmim]BF4 at room temperature in the presence of catalytic amounts of piperidine.
ACKNOWLEDGMENT
This work was supported by an Indiana University–Purdue University Fort Wayne Summer Faculty Research Grant.
Notes
a All reactions run with 4-methoxybenzaldehyde (2 mmol) and Meldrum's acid (2 mmol) in ionic liquids (1 g) at room temperature for 10 h.
b Isolated 3e yields.
a At room temperature in [bmim]BF4 in the presence of 10 µL piperidine as the catalyst.
b Isolated yields.