Modified Kappa‐Carrageenan as a Heterogeneous Green Catalyst for the Synthesis of Nitrogen and Sulfur‐Containing Indenone‐Fused Heterocyclic Compounds

Modified Kappa‐Carrageenan as a Heterogeneous Green Catalyst for the Synthesis of Nitrogen and... The three component reaction of aromatic aldehydes and 1,3‐indandione in the presence of 4‐amino‐6‐hydroxy‐2‐mercaptopyrimidine is catalyzed by active kappa‐carrageenan under mild conditions to afford the desired products in clean reaction profiles. The kappa carrageenan sources are bioavailable and are extracted from Chondrus crispus, a red seaweed. The catalyst could be prepared by mixing of kappa‐carrageenan in a mechanical mortar for 5 min in a simple step. Good yields with superior atom economy, green and recyclable catalyst with natural source, and simple work‐up are the main advantages of the method for the synthesis of dihydropyridopyrimidines. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Heterocyclic Chemistry Wiley

Modified Kappa‐Carrageenan as a Heterogeneous Green Catalyst for the Synthesis of Nitrogen and Sulfur‐Containing Indenone‐Fused Heterocyclic Compounds

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 Wiley Periodicals, Inc.
ISSN
0022-152X
eISSN
1943-5193
D.O.I.
10.1002/jhet.3083
Publisher site
See Article on Publisher Site

Abstract

The three component reaction of aromatic aldehydes and 1,3‐indandione in the presence of 4‐amino‐6‐hydroxy‐2‐mercaptopyrimidine is catalyzed by active kappa‐carrageenan under mild conditions to afford the desired products in clean reaction profiles. The kappa carrageenan sources are bioavailable and are extracted from Chondrus crispus, a red seaweed. The catalyst could be prepared by mixing of kappa‐carrageenan in a mechanical mortar for 5 min in a simple step. Good yields with superior atom economy, green and recyclable catalyst with natural source, and simple work‐up are the main advantages of the method for the synthesis of dihydropyridopyrimidines.

Journal

Journal of Heterocyclic ChemistryWiley

Published: Jan 1, 2018

References

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