The Scientific World Journal / 2012 / Article / Tab 2

Research Article

A Facile Synthesis of New 2-Amino-4H-pyran-3-carbonitriles by a One-Pot Reaction of 𝜶 , 𝜶 -Bis(arylidene) Cycloalkanones and Malononitrile in the Presence of K 𝟐 C O 𝟑

Table 2

Comparison of results using K2CO3 with other catalyst for synthesis of 2-amino-4H-pyran-3-carbonitriles.

EntryCatalystSolventTTimeYield (%)Ref

1NaOH/PiperidineEtOHMW5–9 h70-71[17]
2KF-Al2O3DMFR·T10–14 h68–90[18]
3 HTMABH2O110°C8 h76–93[19]
4 K2CO3EtOHReflux5–60 min75–95This work

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