Sulfamic acid-catalyzed, environmentally benign synthesis of bis-tetronic acids at ambient temperature

Sulfamic acid-catalyzed, environmentally benign synthesis of bis-tetronic acids at ambient... HO O OH Sulfamic acid OH OH EtOH, RT O O O Electronic supplementary material The online version of this article (doi:10.1007/s11164-016-2611- y) contains supplementary material, which is available to authorized users. & Uday V. Desai Organic Chemistry Division, Department of Chemistry, Shivaji University, Kolhapur 416004, India Polymer Science and Engineering Division, CSIR, National Chemical Laboratory, Pune 411008, India Department of Chemistry, Savitribai Phule Pune University, Pune 411007, India 123 142 K. S. Pandit et al. Keywords Sulfamic acid  Bis-tetronic acids  Domino reactions  Green chemistry  Organo-catalyst Introduction The main issue in the synthesis of complex organic molecules is currently aimed at improving efficiency, avoidance of toxic agents, reduction in waste and responsible utilization of natural sources [1–4]. In this context, the use of multicomponent reactions involving the participation of three or more substrates is of relevance from both economic and ecological points of view [5–9]. Like multicomponent reactions, domino reactions also constitute a powerful synthetic strategy to introduce chemical and structural complexity. Among domino reactions, Knoevenagel–Michael reac- tions have emerged as a powerful strategy in the synthesis of various oxa- as well as aza-heterocycles [10–13]. It is well known that Knoevenagel-initiated Domino reactions of Research on Chemical Intermediates Springer Journals

Sulfamic acid-catalyzed, environmentally benign synthesis of bis-tetronic acids at ambient temperature

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Springer Netherlands
Copyright © 2016 by Springer Science+Business Media Dordrecht
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
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