Synthesis of [Zn(ΙΙ)BHPPDAH] as New Heterogeneous Catalyst without Being Immobilized on Any Support and Applied for Mannich Reaction

Heteroatom Chemistry - Tập 24 Số 5 - Trang 372-383 - 2013
Reza Khalifeh1, Hashem Sharghi2, Zahra Rashidi2
1Department of Chemistry, Shiraz University of Technology, Shiraz, 71555–313, Iran
2Department of Chemistry, College of Science, Shiraz University, Shiraz 71454, Iran

Tóm tắt

ABSTRACTIn this paper, a novel heterogeneous complex of zinc with N,N‐bis(2‐hydroxyphenyl)pyridine‐2,6‐dicarboxamide(BHPPDAH) was synthesized. The catalyst was found to be a highly effective catalyst for the three‐component coupling reactions of aldehydes, alkynes, and amines (A3 coupling) via C–H activation. The reactions could be applied to both aromatic and aliphatic aldehydes and alkynes. Nearly quantitative yields of the desired products were obtained in most cases. The reaction proceeds without any cocatalyst or activator, and water is the only byproduct. The catalyst was quantitatively recovered from the reaction by a simple filtration and reused for five cycles with almost consistent activity.

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Heteroatom Chemistry

Tập 24 Số 5

372-383

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