Abstract
A series of novel dimethyl 7‐((3aR,5S,6S,6aR)‐6‐((1‐(4‐chlorophenyl)‐1H‐1,2,3‐triazol‐4‐yl)methoxy)‐2,2‐dimethyltetrahydrofuro[2,3‐d][1,3]dioxol‐5‐yl)‐4‐(4‐fluorophenyl)‐9‐oxo‐8‐phenyl‐6‐thia‐1,2,8‐triazaspiro[4.4]non‐2‐en‐3‐ylphosphonate 2a–g were synthesized by the reaction of chalcone derivatives of 2‐((3aR,5S,6S,6aR)‐6‐((1‐(4‐chlorophenyl)‐1H‐1,2,3‐triazol‐4‐yl)methoxy)‐2,2‐dimethyltetrahydrofuro[2,3‐d][1,3]dioxol‐5‐yl)‐3‐phenylthiazolidin‐4‐one 1 with Bestmann–Ohira reagent. The chemical structures of newly synthesized compounds were elucidated by IR, NMR, MS, and elemental analysis. The compounds 2a–g were evaluated for their nematicidal activity against Dietylenchus myceliophagus and Caenorhabditis elegans; compounds 2b, 2c, 2g, and 2f showed appreciable nematicidal activity.
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