Multicomponent reactions in unconventional solvents: state of the art

Coumarin heterocyclic derivatives: chemical synthesis and biological activity

Potassium phthalimide-N-oxyl: a novel, efficient, and simple organocatalyst for the one-pot three-component synthesis of various 2-amino-4H-chromene derivatives in water

Highly efficient organocatalytic synthesis of diverse and densely functionalized 2-amino-3-cyano-4H-pyrans under mechanochemical ball milling

Guanidine post-functionalized crystalline ZIF-90 frameworks as a promising recyclable catalyst for the production of biodiesel via soybean oil transesterification

A series of dihydropyrano[c]chromene was obtained via condensation of aldehyde, malononitrile and 4-hydroxycoumarin in water catalyzed by morpholine, as a one-pot reaction. The significance of our findings relates to reducing the use of organic solvents, potentially toxic and hazardous materials, as well as its simplicity, good yields, mild conditions, and lower costs.

Morpholine Catalyzed One‐pot Multicomponent Synthesis of Compounds Containing Chromene Core in Water

Various monospiro-2-amino-4H-pyran derivatives have been synthesized in high yields (via three-component coupling of ninhydrin or different isatins with malononitrile and 1,3-dicarbonyl compounds) in the presence of catalytic amount of propane-1-sulfonic acid-modified magnetic hydroxyapatite nanoparticles in H2O. Due to easy magnetic removal of nanocatalyst and applying of H2O as solvent, this protocol enhanced product purity, and promised economic as well as environmental benefits, exemplifying a waste-free chemistry. More importantly, the catalyst could be easily recycled for more than five times without loss of activity.

Synthesis of Monospiro‐2‐amino‐4H‐pyran Derivatives Catalyzed by Propane‐1‐sulfonic Acid‐Modified Magnetic Hydroxyapatite Nanoparticles

Guanidine hydrochloride: An active and simple catalyst for Mannich type reaction in solvent-free condition

The preparation of heterocyclic compounds has attracted great attention in organic chemistry because of their extensive application in the field of bioactive molecules, materials science, and natural products. Accordingly, the straightforward design and synthesis of heterocycles using readily accessible starting materials and reagents are among the main targets of synthetic chemists. In this context, reactions involving aryl methyl ketone and molecular iodine are recognized as powerful approaches for one-pot synthesis of heterocyclic compounds. This review focuses on the approaches developed for one-pot synthesis of N,O,S,Se-heterocyclic compounds through reactions involving aryl methyl ketone and molecular iodine over the past ten years.

Reactions involving aryl methyl ketone and molecular iodine: a powerful tool in the one-pot synthesis of heterocycles

Molybdenum trioxide nanoparticles were synthesized using ammonium heptamolybdate tetrahydrate (AHM) through a facile hydro-solvothermal technique. The materials were characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The mean diameter of semispherical α-MoO3 nanoparticles was determined to be 20 ± 5 nm. The catalytic performance of obtained products was examined in the ring opening of epoxides with diverse amines under solvent-free conditions in excellent yields and short period of times.

MoO3 Nanoparticles Synthesis via Hydro-Solvothermal Technique and Its Application as Catalyst for Efficient Ring Opening of Epoxides With Amines Under Solvent-Free Conditions

Narges Mohammadi

Papers

Morpholine Catalyzed One‐pot Multicomponent Synthesis of Compounds Containing Chromene Core in Water

Synthesis of Monospiro‐2‐amino‐4H‐pyran Derivatives Catalyzed by Propane‐1‐sulfonic Acid‐Modified Magnetic Hydroxyapatite Nanoparticles

Guanidine hydrochloride: An active and simple catalyst for Mannich type reaction in solvent-free condition

Reactions involving aryl methyl ketone and molecular iodine: a powerful tool in the one-pot synthesis of heterocycles

MoO3 Nanoparticles Synthesis via Hydro-Solvothermal Technique and Its Application as Catalyst for Efficient Ring Opening of Epoxides With Amines Under Solvent-Free Conditions