Molecules 2009, 14(9), 3222-3228; doi:10.3390/molecules14093222
Article

Conjugate Addition of Indoles to α,β-Unsaturated Ketones Using a Brønsted Acid Ionic Liquid as an Efficient Catalyst

School of Chemistry and Chemical Engineering, Xinjiang University, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, 830046 Urumqi, China
* Author to whom correspondence should be addressed.
Received: 6 July 2009; in revised form: 20 August 2009 / Accepted: 24 August 2009 / Published: 27 August 2009
PDF Full-text Download PDF Full-Text [335 KB, uploaded 26 August 2009 17:52 CEST]
Abstract: The Brønsted acid ionic liquid [PyN(CH2)4SO3H][p-CH3PhSO3] has been reported as an efficient catalyst for the Michael addition reaction of indoles to α,β-unsaturated ketones. Satisfactory results were obtained, with excellent yields and a simple experimental procedure. The catalyst could be recycled and reused up to three times without any noticeable decrease in the catalytic activity.
Keywords: Brønsted acid ionic liquid; β-indolylketones; Michael addition

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Yu, C.-J.; Liu, C.-J. Conjugate Addition of Indoles to α,β-Unsaturated Ketones Using a Brønsted Acid Ionic Liquid as an Efficient Catalyst. Molecules 2009, 14, 3222-3228.

AMA Style

Yu C-J, Liu C-J. Conjugate Addition of Indoles to α,β-Unsaturated Ketones Using a Brønsted Acid Ionic Liquid as an Efficient Catalyst. Molecules. 2009; 14(9):3222-3228.

Chicago/Turabian Style

Yu, Chuan-Ji; Liu, Chen-Jiang. 2009. "Conjugate Addition of Indoles to α,β-Unsaturated Ketones Using a Brønsted Acid Ionic Liquid as an Efficient Catalyst." Molecules 14, no. 9: 3222-3228.

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert