作者:Sergey P. Gromov、Nikolai A. Kurchavov
DOI:10.1002/1099-0690(200212)2002:24<4123::aid-ejoc4123>3.0.co;2-m
日期:2002.12
As it is an aromatic system, the pyridine ring is relatively resistant to cleavage, although to a lesser extent than benzene.[1,2] Historically, the first thoroughly studied reaction of this type was the Zincke König reaction[3] — cleavage of the quaternized pyridine ring by aromatic amines to form glutacondialdehyde dianils. Subsequently, a large number of reactions with ring opening and ring transformation
由于它是一个芳族系统,吡啶环相对不易裂解,但程度低于苯。 [1,2] 从历史上看,第一个彻底研究的此类反应是 Zincke König 反应 [3] — 裂解季铵化的吡啶环被芳香胺形成戊二醛二苯胺。随后,人们发现并研究了大量亲核试剂诱导的吡啶衍生物开环和环转化反应。 [2,4,5] 特别是一些新的重排,其中一些是化学通用的。杂环化合物,如吡啶衍生物的脒重排[6,7]和烯胺重排[2,8],以及硝基吡啶鎓盐向吲哚的不寻常环转化[9]已在我们以前的出版物中有所描述。