Taken from Protective groups in Organic Synthesis, 3rd edn, T. W. Green et al.
1,3-propanediol, acetone Adv. Cabr. Chem. Biochem 35 31-80 (1978)
2-methylpentane-2,5-diol in AcOH Synthesis 270 (1991)
Acetone & H2O (4:1) 30 mins J. Chem. Soc, Perkin Trans. 1) 1863 (1981)
Other recommendation is H2O2 EtOAc but you have already had success with this.