作者:Ferenc Fülöp、Kalevi Pihlaja、Jorma Mattinen、Gábor Bernáth
DOI:10.1016/s0040-4020(01)81498-8
日期:1987.1
Through condensation of cis-2-hydroxymethylcyclopentylamine (3) and cis-2-amintimethylcyclopentanol (5) with aromatic aldenydes, tautomeric mixtures of 1,3-oxazines and open-chain Schift bases were obtained. The two series of compounds (4a-f,6a-f) gave satisfactory linear correlations corresponding to log Kx = kσ+ + log Kx=w(k = 0.76 ±0.04 as shown earlier2). The ring form of the corresponding trans
通过使顺-2-羟甲基环戊胺(3)和顺-2-氨基甲基环戊醇(5)与芳族缩醛缩合,得到1,3-恶嗪和开链席夫特碱的互变异构混合物。这两个系列的化合物(4a-f,6a-f)给出了令人满意的线性相关,对应于log K x =kσ + + log K x = w(k = 0.76±0.04,如之前的2所示)。由于环戊烷和六元杂环的反式融合中的应变,相应反式衍生物的环形式以相当低的量存在。N-甲基取代可使后者化合物中的环稳定,从而形成恶嗪12和14。所有有关的环化均立体定向发生。