Synthesis of multisubstituted furans via copper-catalyzed intramolecular O-vinylation of ketones with vinyl bromides
摘要:
With the catalysis of Cul/3,4,7,8-tetramethyl-1,10-phenanthroline, various ketones smoothly underwent the intramolecular O-vinylation with vinyl bromides leading to the efficient synthesis of the corresponding multisubstituted furans. (C) 2010 Elsevier Ltd. All rights reserved.
Cu<sup>I</sup>/L-Proline-Catalyzed Coupling of Substituted 3-Iodoprop-2-en-1-ols with 1-Alkynes and Subsequent Cyclization: A Convenient Approach for Synthesizing Polysubstituted Furans
作者:You Wang、Lanting Xu、Dawei Ma
DOI:10.1002/asia.200900523
日期:2010.1.4
Coming full circle: CuI/L‐proline‐catalyzed coupling of substituted 3‐iodoprop‐2‐en‐1‐ols and terminal alkynes followed by copper‐mediated cycloisomerization produced furans in good yields. This method allows the assembly of 2,3,4‐ and 2,3,5‐trisubstituted furans, as well as 2,3,4,5‐tetrasubstituted furans.