Pt(II)-catalyzed hydroarylation reaction of alkynes with pyrroles and furans
作者:Juzo Oyamada、Tsugio Kitamura
DOI:10.1016/j.tet.2009.03.022
日期:2009.5
A Pt(II) catalyst showed a drastic effect on hydroarylation of alkynes with pyrroles and furans compared with Pd(OAc)(2) catalyst. The hydroarylation reactions proceeded smoothly under mild conditions to double-hydroarylation products in good yields. Mono-adducts Were formed only when the second hydroarylation was inhibited by steric hindrance Of Substrates or low reactivity of the mono-adducts. (C) 2009 Elsevier Ltd. All rights reserved.
Scope and Limitations of the Intermolecular Furan-Yne Cyclization
作者:Anna Zeiler、Michael J. Ziegler、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/adsc.201500081
日期:2015.5.4
Different types of alkynes were reacted with 2,5‐disubstituted furans in order to evaluate the scope of the intermolecular furan‐yne reaction. With ethynyl aryl ethers as starting materials, 2‐phenoxy phenols were accessible in moderate to good yields. A different reaction mode was observed for alkynes bearing electron‐withdrawing substituents. For these starting materials a cis‐selective hydroarylation