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Retracted: Effective and Green One‐Pot Multicomponent Synthesis of Novel Derivatives of 4 H ‐Pyrans in the Presence of Hexamethylenetetramine as Catalyst in Water Medium
Author(s) -
Habibi Maysam,
Habibi Azizollah,
Hakimi Nasab Saber,
Dolati Hadi,
Mahdavi Seyedeh Mahbobeh
Publication year - 2017
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.2781
Subject(s) - hexamethylenetetramine , chemistry , malononitrile , catalysis , aldehyde , reaction conditions , proton nmr , organic chemistry , combinatorial chemistry
Hexamethylenetetramine (HMTA) catalyzes synthesis of new polyfunctionalized 4 H ‐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, 1 H‐NMR, and 13 C‐NMR spectroscopy.