Synthesis of 5-Pyridyl-2-furaldehydes via Palladium-Catalyzed Cross-Coupling with Triorganozincates
作者:Donald R. Gauthier,、Ronald H. Szumigala、Peter G. Dormer、Joseph D. Armstrong、R. P. Volante、Paul J. Reider
DOI:10.1021/ol0170612
日期:2002.2.1
[GRAPHICS]-Pyridyl- and 5-aryl-2-furaidehydes are prepared from furaldehyde diethyl acetal in a four-step, one-pot procedure: (1) deprotonation; (2) U to Zn transmetalation; (3) Pd-medlated cross-coupling; (4) aldehyde deprotection. Triorganozincate 7 was found to transfer all three groups in the Pd-catalyzed cross-coupling reaction with haloaromatics.
A convenient synthesis of 5-aryl- and 5-heteroaryl-2-furaldehydes by the cross-coupling reaction of organozincs
作者:Seung-Hoi Kim、Reuben D. Rieke
DOI:10.1016/j.tetlet.2010.03.035
日期:2010.5
An efficient synthetic route for the preparation of 5-heteroaryl- and 5-aryl-2-furaldehydes has been developed. It has been accomplished by the palladium(0)-catalyzed cross-coupling reaction of heteroarylzinc and arylzinc reagents with 5-bromo-2-furaldehyde under very mild conditions. (C) 2010 Elsevier Ltd. All rights reserved.