Silicotungstic acid (H4SiW12O40): An efficient Keggin heteropoly acid catalyst for the synthesis of oxindole derivatives
作者： Kobra Nikoofar
DOI: 10.1016/J.ARABJC.2014.07.008
关键词:
摘要: Abstract Condensation of various isatins with heteroaromatics (indoles and pyrrole) has been carried out in the presence catalytic amount silicotungstic acid (STA) at room temperature to form their corresponding 3,3-bis(indolyl)- 3,3-bis(2-pyrrolyl)oxindoles. The mechanistic aspects reaction have also discussed.
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