362-95-8Relevant articles and documents
Highly selective direct azidation of alcohols over a heterogeneous povidone-phosphotungstic solid acid catalyst
Kamble, Sumit,More, Sagar,Rode, Chandrashekhar
, p. 10240 - 10245 (2016/12/06)
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-N3 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.