当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Sodium alginate: An efficient biopolymeric catalyst for green synthesis of 2-amino-4H-pyran derivatives.

Sodium alginate: An efficient biopolymeric catalyst for green synthesis of 2-amino-4H-pyran derivatives.

Abstract：

:Sodium alginate, a naturally occurring macromolecule, in its granular form and without any post-modification was found to be an efficient and recoverable bifunctional heterogeneous organocatalyst for the domino synthesis of various 2-amino-3-cyano-4H-pyran annulated derivatives through three-component condensation of different aldehydes, malononitrile and diverse 1,3-dicarbonyl compounds under mild conditions. Corresponding 4H-pyran derivatives were obtained in high to excellent yields after 25-150min stirring in 2mL EtOH under reflux conditions in the presence of 10mol% of sodium alginate, equimolar amounts of aldehydes, malononitrile and 1,3-dicarbonyl compounds. The catalyst was easily separated from the reaction mixture to obtain desired products in excellent purity as shown by FTIR and (1)H NMR spectroscopic methods. Avoiding the use of any transition metal, one-pot and multi-component procedure catalyzed by a renewable biopolymer, the reusability of the catalyst, broad substrate scope and operational simplicity are important features of this methodology for preparation of medicinally important compounds.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Dekamin MG,Peyman SZ,Karimi Z,Javanshir S,Naimi-Jamal MR,Barikani M

doi

10.1016/j.ijbiomac.2016.01.080

subject

Has Abstract

pub_date

2016-06-01 00:00:00

pages

172-9

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(16)30081-2

journal_volume

87

pub_type

杂志文章

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