Pentiptycene Building Blocks Derived from Nucleophilic Aromatic Substitution of Pentiptycene Triflates and Halides
摘要:
The nucleophilic aromatic substitution (S(N)Ar) reactions of the nitro-substituted pentiptycene triflate 15 with LiBr and LiI and the resulting halides 18 and 19 with N(3)(-), CN(-), and ArS(-) in DMF provide an efficient route toward pentiptycene halides and dihalides and other new pentiptycene building blocks. The reactivity of diaminopentiptycene in Pd-catalyzed C-N coupling reactions is also demonstrated.
Synthesis of New Halogenated Pentiptycene Building Blocks
作者:Jye-Shane Yang、Jyu-Lun Yan、Ying-Xue Jin、Wei-Ting Sun、Ming-Che Yang
DOI:10.1021/ol900127m
日期:2009.3.19
The synthesis of central-ring halogenated pentiptycene phenols 12−14 and dihalogenated pentiptycenes 15−17 is reported. Their utilities as building blocks for preparing new pentiptycene-derived π-conjugated systems through the Sonogashira, Heck, and Suzuki reactions are also demonstrated.