A streamlined and efficient method for the synthesis of 2-amino-4H-chromenes is achieved by one-pot three-component reaction of aldehydes, 2-naphthol and malononitrile in the presence of ZnO nanoparticles loaded on zeolite-Y (ZnO@zeolite-Y) as a highly active catalyst under solvent-free conditions. ZnO@zeolite-Y has been successfully prepared via hydrothermal technique and its structure was confirmed using nanoscale-like identification techniques included FT-IR, XRD, FE-SEM, EDX analyses and BET surface area measurements. The higher environmental compatibility and sustainability factors such as reusability of the catalyst as an important principle in green chemistry, use of solvent-less technique as a green synthetic approach and easy isolation of the product along with good yields, make the present protocol a true green process for the synthesis of chromenes compared to conventional methods.
Kalhor, M., Bigdeli, M., Mirshokraie, S. A., & Moghanian, H. (2020). ZnO@zeolite-Y Mesoporous as an Eco-friendly and Efficient Nanocatalyst in the Three-component Synthesis of 2-Amino-benzochromenes. Organic Chemistry Research, 6(2), 219-232. doi: 10.22036/org.chem.2019.204444.1220
MLA
Mehdi Kalhor; Mansour Bigdeli; S. Ahmad Mirshokraie; Hassan Moghanian. "ZnO@zeolite-Y Mesoporous as an Eco-friendly and Efficient Nanocatalyst in the Three-component Synthesis of 2-Amino-benzochromenes". Organic Chemistry Research, 6, 2, 2020, 219-232. doi: 10.22036/org.chem.2019.204444.1220
HARVARD
Kalhor, M., Bigdeli, M., Mirshokraie, S. A., Moghanian, H. (2020). 'ZnO@zeolite-Y Mesoporous as an Eco-friendly and Efficient Nanocatalyst in the Three-component Synthesis of 2-Amino-benzochromenes', Organic Chemistry Research, 6(2), pp. 219-232. doi: 10.22036/org.chem.2019.204444.1220
VANCOUVER
Kalhor, M., Bigdeli, M., Mirshokraie, S. A., Moghanian, H. ZnO@zeolite-Y Mesoporous as an Eco-friendly and Efficient Nanocatalyst in the Three-component Synthesis of 2-Amino-benzochromenes. Organic Chemistry Research, 2020; 6(2): 219-232. doi: 10.22036/org.chem.2019.204444.1220