作者:Gábor Tóth、Albert Lévai、Zoltán Dinya、Günther Snatzke
DOI:10.1016/s0040-4020(01)91007-5
日期:1991.9
The thermal decomposition of spiro-1-pyrazolines 2 obtained by the cycloaddition of exocyclic α,β-unsaturated ketones with diazomethane gives spirocyclopropanes 4 with high selectivity and the new β-methyl-3-benzylidene derivatives 3. The configuration and conformation of the thermolysis products 3 and 4 were elucidated by different n.m.r. methods.
通过将环外α,β-不饱和酮与重氮甲烷环加成反应而得到的螺-1-吡唑啉2进行热分解,得到具有高选择性的螺环丙烷4和新的β-甲基-3-亚苄基衍生物3。通过不同的核磁共振方法对产物3和4进行了阐明。