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A highly efficient method for the synthesis of [α.sup.1]-oxindole-α-hydroxyphosphonates via nano-rod ZnO catalyzed hydrophosphonation of isatin derivatives was developed. The reaction products are in excellent yields using the catalytic system nano-rod ZnO (25 mol%) under solvent-free conditions at room temperature. The catalyst can be reused several times without any significant loss of its activity. Key words: nano-rod ZnO, hydrophosphonation, C-P bond formation, solvent-free. On a mis au point une methode tres efficace de synthese des [[alfa].sup.1]-oxindole-[alfa]-hydroxyphosphonates par hydrophosphonation de derives de l'isatine catalysee par des nanotiges de ZnO. Les produits de reaction sont obtenus avec un excellent rendement en utilisant le systeme catalytique de nanotiges de ZnO (25 mol%) sans solvant a la temperature ambiante. Le catalyseur peut etre reutilise plusieurs fois sans perte appreciable de son activite. [Traduit par la Redaction] Mots-cles: nanotiges de ZnO, hydrophosphonation, formation d'une liaison C-P, sans solvant., Introduction Considering the increasing environmental pollution and its drastic impact on living systems, green chemistry demands eco-friendly organic chemical processes. (1) Hence, the significance of greener pathways in organic synthesis [...]