Diaceno[a,e]pentalenes from Homoannulations of o-Alkynylaryliodides Utilizing a Unique Pd(OAc)2/n-Bu4NOAc Catalytic Combination

详细信息    查看全文

• 作者：Junjian Shen ; Dafei Yuan ; Yan Qiao ; Xingxing Shen ; Zhongbo Zhang ; Yuwu Zhong ; Yuanping Yi ; Xiaozhang Zhu
• 刊名：Organic Letters
• 出版年：2014
• 出版时间：September 19, 2014
• 年：2014
• 卷：16
• 期：18
• 页码：4924-4927
• 全文大小：289K
• ISSN：1523-7052

文摘

A heterogeneous catalytic system, Pd(OAc)₂/n-Bu₄NOAc, for the efficient synthesis of diaceno[a,e]pentalenes via a tandem Pd catalytic cycle is reported. The catalytic partner n-Bu₄NOAc played indispensable and versatile roles, acting as both the media for recovering active Pd(0) species and their stabilizer. A series of new diaceno[a,e]pentalenes were obtained in moderate to high yields, among which the octacyclic dianthracenopentalene was found to be highly emissive.