229-71-0Relevant academic research and scientific papers
Controlled Photocyclization, Photodimerization, and Photoisomerization of Stilbazole Salts within Nafion Membranes
Li, Xiao-Hong,Wu, Li-Zhu,Zhang, Li-Ping,Tung, Chen-Ho
, p. 1175 - 1177 (2007/10/03)
matrix presented Water- and methanol-swollen Nafion membranes were used as microreactors to successfully control the photochemical reaction pathway of stillbazole derivatives. Of particular interest is the production of azaphenanthrene (the product not ob
Model reactions for the synthesis of azacorannulenes and related heteroaromatic compounds
Dix, Ina,Doll, Christian,Hopf, Henning,Jones, Peter G.
, p. 2547 - 2556 (2007/10/03)
4-(2-Ethynylphenyl)pyridine (10), 3-(2-ethynylphenyl)pyridine (11), 2-(2-trimethylsilylethynylphenyl)pyridine (26), and 3-ethynyl-2-phenylpyridine (13) were prepared from readily available pyridine precursors by standard coupling reactions. Pyrolysis of 10 at 810 °C/0.5 Torr provided benzo[f]isoquinoline (45) and the benzopentalene dimer 47. Pyrolysis of 11 (820 °C/0.5 Torr) afforded benzo[f]quinoline (50), benzo[h]i-soquinoline (52), and a mixture of isomers of 47. Pyrolysis of 13 (820 °C/0.3 Torr) provided benzo[h]quinoline (56) and the novel azulene derivative azuleno[1,2-b]pyridine (58). When 26 was desilylated by treatment with TBAF in THF/water, the unusual "dimerization" product 37 was produced; its structure was confirmed by X-ray structural analysis. The mechanisms of these transformations are discussed. Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.
