Organic chemistry
Chinna Rajanna Kamatala; Hemanth Sriram Y.; Satish Kumar Mukka; Venkateswarlu Marri; Touheeth Fatima; Sai Sudhakar Mukka; Madhusudan Raju R.
Volume 5, Issue 3, pp. 237-363, Serial No. 16 , July 2017, , Pages 352-363
Abstract
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 ...
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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.