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

Issa Yavari, Younes Fadakar

Molecular diversity 2022 Apr

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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. © 2021. The Author(s), under exclusive licence to Springer Nature Switzerland AG.

Citation

Issa Yavari, Younes Fadakar. Reverse orientation in the ultrasound-assisted [3 + 2]-cycloaddition reaction of nitrile imines with 3-formylchromone-Meldrum's acid adducts. Molecular diversity. 2022 Apr;26(2):1141-1150