Ni-Al2O3 as reusable heterogeneous catalyst for expedient one-pot synthesis of naphthopyrans

被引：19

作者：

Kalita, Subarna Jyoti ^{[1
]}

Saikia, Nilakhy ^{[1
]}

Deka, Dibakar Chandra ^{[1
]}

Mecadon, Hormi ^{[1
]}

机构：

[1] Univ Gauhati, Dept Chem, GB Nagar, Gauhati 781014, Assam, India

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2016年 / 42卷 / 09期

关键词：

Ni-Al2O3; Chromenes; One-pot; Three-component reaction; MULTICOMPONENT REACTIONS; AQUEOUS-MEDIA; SUBSTITUTED; 2-AMINO-2-CHROMENES; WATER; EFFICIENT; 2-AMINOCHROMENES; BENZOPYRANS; DERIVATIVES; CHROMENES; COMPOSITE;

D O I：

10.1007/s11164-016-2500-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ni-Al2O3 is an efficient and reusable heterogeneous catalyst for the synthesis of naphthopyrans by one-pot three-component reaction of naphthols, aldehydes, and malononitrile in EtOH/H2O (1:1) solvent medium. A comparative study of Ni-Al2O3 with neutral Al2O3 revealed that reactions with the former afforded better product yields, indicating higher catalytic efficacy. Ni-Al2O3 due to its low cost, good activity, ease of handling, and easy recovery, with high yields and simple purification method makes the procedure highly applicable. [GRAPHICS] .

引用

页码：6863 / 6871

页数：9

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