Events The 15th International Electronic Conference on Synthetic Organic Chemistry

Event submissions

Published

This submission belongs to the session a. General Organic Synthesis of the event The 15th International Electronic Conference on Synthetic Organic Chemistry

Published date

01 Nov, 2011

Citation

Bagher Kazemi, Shahrzad Javanshir, An efficient synthesis of 4H-chromenes and 4H-pyrans derivatives via an ultrasound assisted one pot three-component reaction, in Proceedings of The 15th International Electronic Conference on Synthetic Organic Chemistry, 1 November–30 November 2011, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-15-00764

Facebook

Twitter

An efficient synthesis of 4H-chromenes and 4H-pyrans derivatives via an ultrasound assisted one pot three-component reaction

Bagher Kazemi ¹

Shahrzad Javanshir ¹

1. Iran university of science and technology

Abstract

In this research, a new series of substituted 4H- pyrans and 4H-chromenes derivatives has been synthesized at ambient temperature in the presence of catalytic amount of sodium carbonate (20 mol %) via one-pot three-component cyclocondensation reactions of malononitrile, dialkylacetylenedicarboxylates and 1,3-diketones in ethanol under ultrasound irradiation. The synergistic effect of MCRs and ultrasound has been successfully demonstrated to offer an easy way for the synthesis of these compounds in excellent yields.

Keywords

2-amino-4H-chromenes

2-amino-4H-pyrans

ultrasound assisted

one pot

three-component

Solvent-Free Microwaves Assisted Amination of Haloarenes by Aromatic Nucleophilic Substitution

Facile Synthesis of 1,1-Diacetates Catalyzed by MCM-41-SO₃H Under Solvent-free Condition