Journal
TETRAHEDRON
Volume 63, Issue 27, Pages 6252-6258Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2007.02.043
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A general and efficient palladium-catalyzed reductive carbonylation with low catalyst loadings (0.5 mol% Pd or below) has been developed. The formylation of aryl and heteroaryl bromides proceeds smoothly in the presence of palladium/di-1-adamantyl-n-butylphosphine at ambient pressure of synthesis gas to afford the corresponding aromatic aldehydes in good yields and excellent selectivity. In addition, vinyl halides react under similar conditions to form alpha,beta-unsaturated aldehydes in good yield. (c) 2007 Elsevier Ltd. All rights reserved.
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