An expeditious, simple, and green method was developed for the synthesis of privileged aryl/heterocyclicphosphonates, 8(a-c) to 13(a-c) through Michaelis-Arbuzov reaction of aryl=heterocyclic halides (Br), 1-6, and trialkylphosphites, 7(a-c), in roomtemperature ionic liquid [bbim]Br using heterogeneous Lewis catalyst, nano-silica-supported boron trifluoride (BF 3 -SiO 2 ). The advantages of this protocol are simplicity, good yield of the products, less reaction time (20-38 min), mild reaction conditions, easy workup, and reusability of the catalyst and ionic liquid. It is demonstrated that nano-BF 3 -SiO 2 is a recoverable and easy accessible catalyst for the formation of C(sp 2 )-P bond in an ionic liquid.

Expeditious, Nano-BF 3·SiO2-Catalyzed Michaelis-Arbuzov Reaction in an Ionic Liquid: Synthesis of Privileged Aryl/Heterocyclic Phosphonates. -An efficient, environmentally benign methodology for the synthesis of privileged aryl/heteroaryl phosphonates (III) (15 examples) is developed. The main advantages of the methodology are good yields, short reaction time, and the reusability of the heterogeneous catalyst as well as of the reaction medium. -(RASHEED, S.; RAO, D. S.; SUBRAMANYAM, C.; BASHA, S. T.; RAJU*, C. N.; Synth. Commun. 44 (2014) 20, 2988-2998, http://dx.