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
为了评估分子间呋喃-炔反应的范围,将不同类型的炔烃与2,5-二取代的呋喃反应。以乙炔基芳基醚为起始原料,可以中等至良好的收率获得2-苯氧基苯酚。对于带有吸电子取代基的炔烃,观察到了不同的反应模式。对于这些起始原料,以反马尔科夫尼可夫的方式进行了顺式选择性加氢芳基化,收率很高。事实证明1,2-二炔也是合适的起始原料。由于第二个炔基部分,在最初的苯酚合成后,随后通过新形成的酚氧进行的加氢烷氧基化可串联产生苯并呋喃。