Highly regioselective ring-opening coupling of diarylmethylenecyclopropa[b]naphthalenes with Grignard reagents
作者:Jian Cao、Xian Huang、Luling Wu
DOI:10.1039/c3cc00171g
日期:——
Highly regioselective ring-opening coupling reactions of diarylmethylenecyclopropa[b]naphthalenes with Grignard reagents have been developed, which provide differently substituted beta-vinylic naphthalenes in moderate to excellent yields.
A ligand-controlled switch of regioselectivity in ring-opening coupling of diarylmethylenecyclopropa[b]naphthalenes with Grignard reagents
作者:Jian Cao、Xian Huang、Luling Wu
DOI:10.1039/c3ob42084a
日期:——
A ligand-controlled regioselectivity switch of ring-opening coupling reaction of diarylmethylenecyclopropa[b]naphthalenes with Grignard reagents providing differently substituted β-vinylic naphthalenes in moderate to excellent yields was reported: when Pd(OAc)2 was used, the aromatic group from the Grignard reagent regioselectively coupled to the naphthyl ring after the ring-opening of three-membered
报道了二芳基亚甲基环丙烷[ b ]萘与格氏试剂的开环偶联反应的配体控制的区域选择性开关,该试剂以中等至优异的产率提供了不同取代的β-乙烯基萘:当使用Pd(OAc)2时,格氏试剂在三元环的开环后区域选择性地与萘环偶联,这不同于Pd(PPh 3)2 Cl 2催化的反应。根据仔细的NMR研究,我们得出结论,这可以用配体效应来解释。