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Synthesis of indanones by sequential Heck-reduction-cyclization-alkylation (HRCA) reactions
Faculty
Science
Year:
2012
Type of Publication:
Article
Pages:
338-341
Authors:
Nassar-Hardy, Luma, Fabre, Sandy, Amer, Atef M, Fouquet, Eric, Felpin, Francois-Xavier
DOI:
10.1016/j.tetlet.2011.11.042
Journal:
TETRAHEDRON LETTERS PERGAMON-ELSEVIER SCIENCE LTD
Volume:
53
Research Area:
Chemistry
ISSN
ISI:000299582100019
Keywords :
Aryl diazonium salt, Palladium, Heck reaction, Indanone, One-pot reaction
Abstract:
A simple and efficient synthesis of indanones, bearing a quaternary carbon centre, has been developed. The method features, in a one-pot process, the use of a multi-task palladium catalyst for the sequential Heck-reduction reactions, followed by a base-mediated cyclization-allcylation sequence. This methodology, called Heck-reduction-cyclization-allcylation (HRCA), is carried out under mild and simple experimental conditions with the use of inexpensive reagents. The mild conditions have been made possible by the use of diazonium salts that allow Heck couplings at moderate temperature (40 degrees C) under ligand-free conditions. (C) 2011 Elsevier Ltd. All rights reserved.
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