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Reverse orientation in the ultrasound-assisted [3 + 2]-cycloaddition reaction of nitrile imines with 3-formylchromone-Meldrum's acid adducts. 2022

Issa Yavari, and Younes Fadakar
Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran. yavarisa@modares.ac.ir.

The [3 + 2]-cycloaddition reaction of nitrile imines with 2,2-dimethyl-5-[(4-oxo-4H-chromen-3-yl)methylene]-1,3-dioxane-4,6-dione tends to form the reverse-orientation products under ultrasound irradiation in EtOH in the presence of Et3N. Evidence for the structure of product 5b was obtained from single-crystal X-ray analysis.

UI MeSH Term Description Entries
D007097 Imines Organic compounds containing a carbon-nitrogen double bond where a NITROGEN atom can be attached to HYDROGEN or an alkyl or aryl group. Imine
D009570 Nitriles Organic compounds containing the -CN radical. The concept is distinguished from CYANIDES, which denotes inorganic salts of HYDROGEN CYANIDE. Nitrile
D002867 Chromones 1,4-Benzopyrones,Chromone,1,4 Benzopyrones
D004146 Dioxanes Compounds that contain the structure 1,4-dioxane.
D061565 Cycloaddition Reaction Synthetic organic reactions that use reactions between unsaturated molecules to form cyclical products. Cycloaddition,Cycloaddition Reaction Techniques,Diels-Alder Reaction,Cycloaddition Reaction Technique,Cycloaddition Reactions,Diels Alder Reaction,Reaction Technique, Cycloaddition,Reaction Techniques, Cycloaddition,Reaction, Cycloaddition,Reaction, Diels-Alder,Reactions, Cycloaddition,Technique, Cycloaddition Reaction,Techniques, Cycloaddition Reaction

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