Silica-supported bismuth (III) chloride as a new recyclable heterogeneous catalyst for the Paal–Knorr pyrrole synthesis

K Aghapoor, L Ebadi-Nia, F Mohsenzadeh…

Index: Aghapoor, Kioumars; Ebadi-Nia, Leila; Mohsenzadeh, Farshid; Mohebi Morad, Mina; Balavar, Yadollah; Darabi, Hossein Reza Journal of Organometallic Chemistry, 2012 , vol. 708-709, p. 25 - 30

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Citation Number: 28

Abstract

Silica-supported bismuth (III) chloride (BiCl3/SiO2) acts as as a highly efficient heterogeneous Lewis acid catalyst for the Paal–Knorr pyrrole synthesis in hexane at room temperature. The catalyst exhibited remarkable reusable activity and higher catalytic performance than homogeneous BiCl3. A plausible mechanism for the catalytic action of BiCl3/SiO2 has been introduced.