Application of {[4,4-BPyH][C(CN)(3)](2)} as a Bifunctional Nanostructured Molten Salt Catalyst for the Preparation of 2-Amino-4H-chromene Derivatives under Solvent-Free and Benign Conditions

Zolfigol Mohammad Ali<sup>*</sup>; Yarie Meysam; Baghery Saeed

doi:10.1055/s-0035-1561345

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Application of {[4,4-BPyH][C(CN)(3)](2)} as a Bifunctional Nanostructured Molten Salt Catalyst for the Preparation of 2-Amino-4H-chromene Derivatives under Solvent-Free and Benign Conditions

作者：Zolfigol Mohammad Ali^*; Yarie Meysam; Baghery Saeed

来源：Synlett, 2016, 27(9): 1418-1422.

DOI：10.1055/s-0035-1561345

摘要

The bifunctional nanostructured molten salt [4,4-bipyridine]-1,1-diium tricyanomethanide has been employed as a highly efficient and powerful catalyst for the preparation of 2-amino-4H-chromenes. A wide variety of aromatic aldehydes was condensed with malononitrile and resorcinol, 1-naphthol or 2-naphthol under mild and solvent-free conditions. This protocol has the advantages of short reaction times, high to excellent yields, and straightforward workup.