Oxidation of thiols to disulfides is well documented and wide range of reagents have been used for this conversion. [1][2][3][4][5][6][7][8][9] As is usually the case for every reagents used to date, some of the reported reagents suffer from disadvantages such as: long reaction time, availability, difficult work-up, preparation and instability. Conseqently, there is a need for protocols using readily available, safe and cheap reagents, leading to general and selective oxidation of thiols in good yields.We have already described the use of ammonium dichromate 10 (ADC) in the presence of Mg(HSO 4 ) 2 and wet SiO 2 11