A new environmentally friendly method for the synthesis of calix(4)pyrroles over molecular sieve catalysts

MCM-41 was found to be the most effective heterogeneous catalyst for the synthesis of calix(4)pyrrole. Various metal ion substituted MCM-41 samples were synthesized and were used to improve the yields of calix(4)pyrrole. Co-MCM-41 was found to give maximum yields. The effects of varying Si/Al ratio...

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Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2005-08, Vol.237 (1), p.155-160
Main Authors: Radha Kishan, Motkuri, Radha Rani, Vippagunta, Kulkarni, Shivanand Janardan, Raghavan, Kondapuram Vijaya
Format: Article
Language:English
Subjects:
Calixpyrrole
Catalysis
Chemistry
Exact sciences and technology
General and physical chemistry
Heterogeneous
Ion-exchange
Macrocycle
MCM-41
Surface physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Zeolites
Zeolites: preparations and properties
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Summary:MCM-41 was found to be the most effective heterogeneous catalyst for the synthesis of calix(4)pyrrole. Various metal ion substituted MCM-41 samples were synthesized and were used to improve the yields of calix(4)pyrrole. Co-MCM-41 was found to give maximum yields. The effects of varying Si/Al ratio in MCM-41, molar ratio of various reactants, and the role of solvent towards this macrocyclization reaction have been studied.
ISSN:1381-1169
1873-314X
DOI:10.1016/j.molcata.2005.03.006