Scandium trifluoromethanesulfonate as an extremely active Lewis acid catalyst in acylation of alcohols with acid anhydrides and mixed anhydrides

~93%

~87%

~93%

~96%

~3%

~99%

~99%

~95%

~10%

~0%

~96%

~69%

~0%

~2%

~93%

~53%

~92%

~90%

~0%

~91%

~92%

~2%

~0%