“…Traditional methods for performing such a transformation generally involve the use of stoichiometric amounts of strong oxidizing reagents (e.g., MnO 2 , SeO 2 , CrO 3 , and RuO 4 ) [2][3][4], and suffer from considerable drawbacks, such as high cost, low yield, harsh or delicate reaction conditions, and a large amount of waste by-products. Oxidation with ceric ammonium nitrate [5], H 5 IO 6 [6], diaziridinone [7], tert-butyl hydroperoxide [8], trichloroisocyanuric acid [9,10], H 2 O 2 [11][12][13], and other reagents [14][15][16] have also been developed for this conversion. However, some of the procedures are often associated with one or more disadvantages, such as long reaction times, high temperatures, difficulties in work-up, use of expensive, toxic and moisture-sensitive reagents, and difficulties in recycling the catalyst.…”