A wide variety of 2-amino-4H-chromene derivatives with diverse substituents on the 4H-
chromene ring were efficiently prepared via one-pot, three-component reaction of an …

A simple and environmentally benign synthesis of 2-amino-4H-chromene is described using
hydrotalcite as a solid base catalyst in aqueous medium. The catalysts were prepared by a …

An efficient and convenient method for synthesis of dihydropyrano [3, 2-c] chromene
derivatives by one-pot, three-component reaction of aldehydes, malononitrile, and 4 …

Approximately one‐quarter of people over the age of 65 are estimated to suffer some form of
cognitive impairment, underscoring the need for effec tive cognitive‐enhancing agents …

A series of ethyl 2‐amino‐6‐(hydroxymethyl)‐8‐oxo‐4, 8‐dihydropyrano [3, 2‐b] pyran‐3‐
carboxylates (P1‐P13) as annulated kojic acid derivatives were synthesized, and evaluated …

The reaction of active methylene moieties, pyrazolones, thiazolylacetonitriles, phenols and
alkyl pyridazinones with benzylidene-malononitrile in ethanol in presence of chitosan …

Recent synthesis and utilization of enamines as precursors for heterocyclic and carbocyclic
compounds are reviewed. Two general synthetic routes for preparation of enamines based …

2–Amino–4-phenyl–5, 6, 7, 8–tetrahydroquinoline–3–carbonitrile (3) was synthesized by
treating cyclohexanone (1) with 2–benzylidenemalononitrile (2) in the presence of …

DABCO entrapped in agar-agar: A heterogeneous gelly catalyst for multi-component synthesis
of 2-amino-4H-chromenes - ScienceDirect Skip to main contentSkip to article Elsevier logo …

In this work, we have described an efficient one-pot three-component preparation of 2-amino-
4 H-chromene by the reaction of aromatic aldehyde (1), malononitrile, or ethylcyanoacetate …