Extended heterocyclic systems 1. The synthesis and characterisation of pyrrolylpyridines, alternating pyrrole: Pyridine oligomers and polymers, and related systems
作者:R. Alan Jones、Marielena Karatza、Tevita N. Voro、Pervin U. Civeir、Annete Franck、Orhan Ozturk、John P. Seaman、Alexander P. Whitmore、David J. Williamson
DOI:10.1016/0040-4020(96)00448-6
日期:1996.6
The Stetter procedure has been adapted to produce oligomeric and polymericpyrrolylpyridines, which have been characterised by 13C NMR spectroscopy. The lower activity of 2-(pyrrol-2-yl)pyridines towards quaternisation permits selective N-alkylation of 2-, 3- and 4-(pyrrol-2-yl)pyridines.
Stetter程序已经过调整,可以生产低聚和聚合的吡咯基吡啶,这些化合物已通过13 C NMR光谱进行了表征。2-(吡咯-2-基)吡啶对季铵化的较低活性允许2-,3-和4-(吡咯-2-基)吡啶的选择性N-烷基化。
Extended heterocyclic systems 2. The synthesis and characterisation of (2-furyl)pyridines, (2-thienyl)pyridines, and furan-pyridine and thiophene-pyridine oligomers
作者:R.Alan Jones、Pervin U. Civcir
DOI:10.1016/s0040-4020(97)00745-x
日期:1997.8
The Stetter procedure has been adapted to produce simple 2-furyl- and 2-thienylpyridines and their relatedoligomers, which have been characterised by 13C NMR spectroscopy. σ values for the 2-furyl and 2-thienyl rings have been deduced from the pKa values of the conjugate acids of the 2-furyl- and 2-thienylpyridines.
Stetter程序已经过调整,可以生产简单的2-呋喃基和2-噻吩基吡啶及其相关的低聚物,这些寡聚物已通过13 C NMR光谱进行了表征。由2-呋喃基和2-噻吩基吡啶的共轭酸的pK a值推导出2-呋喃基和2-噻吩基环的σ值。