Table 4: Comparison of the thiocyanation of indole using the reported catalysts versus SESA.

Entry System Time (min)Yield % [ref.]

1SESA1097 [this work]
2I2/MeOH5085 [27]
3DDQ/MeOH5094 [41]
4DEAD/MeCN4585 [28]
Mn(OAc)3/HOAc2 (h)83 [11]
5K10 clay/MeOH, 80°C2 (h)85 [26]
6Citric acid/H2O2/H2O2091 [35]