Issue 21, 2012

Ionic liquid 1,3-disulfonic acid imidazolium hydrogen sulfate: a novel and highly efficient catalyst for the preparation of 1-carbamatoalkyl-2-naphthols and 1-amidoalkyl-2-naphthols

Abstract

In this work, a novel ionic liquid, 1,3-disulfonic acid imidazolium hydrogen sulfate {[Dsim]HSO4}, with a Brønsted acidic property, is synthesized, and used as a highly efficient, green, recyclable and homogeneous catalyst for the preparation of 1-carbamatoalkyl-2-naphthols and 1-amidoalkyl-2-naphthols under solvent-free and relatively mild conditions. The one-pot multi-component condensation of β-naphthol with arylaldehydes and alkyl carbamates or amides affords the title compounds in high yields and in short reaction times.

Graphical abstract: Ionic liquid 1,3-disulfonic acid imidazolium hydrogen sulfate: a novel and highly efficient catalyst for the preparation of 1-carbamatoalkyl-2-naphthols and 1-amidoalkyl-2-naphthols

Supplementary files

Article information

Article type
Communication
Submitted
14 Apr 2012
Accepted
10 Jul 2012
First published
11 Jul 2012

RSC Adv., 2012,2, 7988-7991

Ionic liquid 1,3-disulfonic acid imidazolium hydrogen sulfate: a novel and highly efficient catalyst for the preparation of 1-carbamatoalkyl-2-naphthols and 1-amidoalkyl-2-naphthols

A. Zare, T. Yousofi and A. R. Moosavi-Zare, RSC Adv., 2012, 2, 7988 DOI: 10.1039/C2RA20679J

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