Abstract
This paper presents Sonogashira coupling reaction of aryl bromides with protected homopropargyl alcohols such as tert-butyldimethyl(1-phenylbut-3-ynyloxy)silane and tert-butyldimethyl(1-(2,4-dichlorophenyl)but-3-ynyloxy)silane in piperidine catalyzed by PdCl2/PPh3 without copper(I). The coupling products, disubstituted acetylene, are obtained in good or excellent yields. These products can be further used for the synthesis of 2,5-disubstituted 3-bromofurans.
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Supported by the National Natural Science Foundation of China (Grant No. 20421202 & 20372033)
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Wang, X., Liu, L., Chang, W. et al. Sonogashira coupling reaction of homopropargyl ether with aryl bromides and synthesis of 2,5-disubstituted 3-bromofurans. Sci. China Ser. B-Chem. 52, 1314–1320 (2009). https://doi.org/10.1007/s11426-009-0203-z
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DOI: https://doi.org/10.1007/s11426-009-0203-z