Synfacts, Table of Contents Synfacts 2025; 21(07): 720DOI: 10.1055/a-2601-4242 Polymer-Supported Synthesis Knoevenagel and Claisen–Schmidt Condensations in Water Using NHSO3H-Functionalized Natural Asphalt Authors Contributor(s): Yasuhiro Uozumi Aya Tazawa Recommend Article Abstract Buy Article(opens in new window)Keywords Keywordsnatural asphalt - sulfamic acid - Knoevenagel condensation - Claisen–Schmidt condensation Full Text