Ebrahim Abouzari-Lotf - Sustainable alternative protocols for the multicomponent synthesis of spiro-4H-pyrans catalyzed by 4-dimethylaminopyridine

Document created by Ebrahim Abouzari-Lotf on Aug 13, 2015
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  Publication Details (including relevant citation   information):

  Zakeri, M., Nasef, M.M., Abouzari-Lotf, E., Moharami, A., Heravi,   M.M. -

  Abstract: Green approaches to the synthesis of   spiro-4. H-pyrans are reported based on the one-pot and   three-component condensation via a domino   Knoevenagel/Michael/cyclization sequence. These approaches   involve evaluation of the activity of several organocatalysts in   water as a reaction media and also under solvent-free in both   microwave irradiation and ball milling conditions. Extensive   experiments were carried out to optimize the reaction parameters   including type and amount of catalyst, reaction temperature and   time. Microwave irradiation in presence of   4-dimethylaminopyridine (DMAP) was observed as the best procedure   with good yields, short reaction time, environmental   friendliness, and convenient operation. © 2015 The Korean Society   of Industrial and Engineering Chemistry.

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