Retracted: Effective and Green One‐Pot Multicomponent Synthesis of Novel Derivatives of 4H‐Pyrans in the Presence of Hexamethylenetetramine as Catalyst in Water Medium |
| |
Authors: | Maysam Habibi Azizollah Habibi Saber Hakimi Nasab Hadi Dolati Seyedeh Mahbobeh Mahdavi |
| |
Institution: | 1. Faculty of Chemistry, Kharazmi University, No. 43, P. Code 15719‐14911, Mofateh Avenue, Tehran, Iran;2. Faculty of Chemistry, Kharazmi University, No. 43, P. Code 15719‐14911, Mofateh Avenue, Tehran, IranE‐mail: |
| |
Abstract: | Hexamethylenetetramine (HMTA) catalyzes synthesis of new polyfunctionalized 4H‐pyrans by reaction of aromatic aldehyde, malononitrile, and β‐keto esters via one‐pot three‐component procedure in water medium. Addition of reactants was performed by two methods led to achieve similar results. Using HMTA in catalytic amount not only represents the economic face of the reaction, but also due to the use of water, a green and safe reaction condition is organized. Thus, the current strategy provides the benefits of high productivity, convenient operation, and environmental friendliness. Structure of all products was proved by elemental analysis, IR, 1H‐NMR, and 13C‐NMR spectroscopy. |
| |
Keywords: | |
|
|