Iranian chemical communication 2423-4958 5 Issue 3, pp. 237-363, Serial No. 16 2017 07 01 Reusable Silica supported Perchloric acid and potassium bisulphate as green catalysts for thiocyanation of aromatic compounds under solvent free conditions 352 363 3773 EN Chinna Rajanna Kamatala Department of Chemistry, Osmania University, Hyderabad (T.S)-500007 India Hemanth Sriram Y. Department of Chemistry Osmania University Hyederabad -(T.S) 500007 India Satish Kumar Mukka Department of Chemistry Osmania University Hyderabad-(T.S) India Venkateswarlu Marri Department of Chemistry Osmania Univerity Hyderabad-(T.S) India Touheeth Fatima Department of Chemistry Osmania University Hyderabad -(T.S) India Sai Sudhakar Mukka School of Chemistry BITS, Pilani, Hyderabad Madhusudan Raju R. Department of Chemistry Osmania University Hyderabad-T.S India Journal Article 2017 01 06 Reusable silica supported perchloric acid and potassium bisulphate have been prepared and explored as green catalysts for thiocyanation of aromatic compounds under conventional and solvent free microwave assisted conditions. The microwave assisted protocol exhibited remarkable rate accelerations and offered selective thiocyanation of aromatic and hetero aromatic compounds in good yields. Reaction times observed in conventional methods range of 2.0 to 6.0 hours, which reduced to only few minutes (1 to 3 min) in microwave assisted reactions. The developed protocols are also promising and comparable with the existing procedures. Prepared catalysts could be easily recycled for five time with a reproducible efficiency. https://icc.journals.pnu.ac.ir/article_3773_daeb0cb9c86f0b5a4ec796a057ce84aa.pdf