@article {43411,
	title = {Highly selective direct azidation of alcohols over a heterogeneous povidone-phosphotungstic solid acid catalyst},
	journal = {New Journal of Chemistry},
	volume = {40},
	year = {2016},
	month = {DEC},
	pages = {10240-10245},
	abstract = {A simple protocol for the selective azidation of alcohols is developed using a solid acid hybrid of a povidone and phosphotungstic acid (PVP-PWA) using azidotrimethylsilane as an azide source at room temperature. In a broad substrate scope, various activated as well as unactivated benzylic and diphenyl alcohols were treated smoothly with TMS-N-3 to selectively produce only azide products with excellent yields in a very short reaction time of 2 h. FT-IR confirmed the stability of the catalyst with retention of the Keggins structure after the reaction. Recycling experiments demonstrated the reusability of the PVP PWA (3:1) several times without losing its original activity.},
	doi = {10.1039/c6nj02500e},
	author = {Kamble, Sumit and More, Sagar and Rode, Chandrashekhar V.}
}
