Quaternary Salts of Halogenated Pyridines and Quinolines<sup>1</sup>
作者:Carl T. Bahner、Wm. K. Easley、Madge D. Pickens、Harold D. Lyons、Lilburn L. Norton、Betty Gay Walden、George E. Biggerstaff
DOI:10.1021/ja01151a501
日期:1951.7
US3951940A
申请人:——
公开号:US3951940A
公开(公告)日:1976-04-20
US3981558A
申请人:——
公开号:US3981558A
公开(公告)日:1976-09-21
Photocyclization Mechanism of Halopyridinium Salt Tethered to Arene: Flash Photolysis Observation of a Pyridinium σ, Cyclohexadienyl Radicals, and a Dihalide Radical Anion in Aqueous Solution
作者:Yong-Tae Park、Nam Woong Song、Chul-Gyun Hwang、Kwang-Wook Kim、Dongho Kim
DOI:10.1021/ja970425u
日期:1997.11.1
to phenyl group with methylene linkage (1 and 2a) are more reactive than the 2-halopyridinium salts with an ethylene group (3 and 4a). As expected, the 2-bromopyridinium salt linked to the phenyl group with ethylene linkage (4a) is more reactive than the 2-chloropyridinium salt with the ethylene group (3), which is different from the 2-halopyridinium salt with the methylene linkage. The transient intermediates