Department of Chemistry, Moscow State Lomonosov University, Moscow, Lenin Hills, 1, Russian Federation 119992.
J Org Chem. 2009 Dec 18;74(24):9428-32. doi: 10.1021/jo901984q.
A photochemical reaction of mixed phosphonium-iodonium ylides with acetylenes yielding lambda(5)-phosphinolines, a rare class of phosphorus heterocycles hardly accessible by other methods, was found. The yields of lambda(5)-phosphinolines vary from 35% to 80%. The structures of two phosphinolines were established by single-crystal X-ray diffraction. The X-ray diffraction and NMR spectra data indicate the superposition of ylidic and aromatic structures for phosphinolines.
研究发现，混合膦-碘𬭩叶立德与炔烃的光化学反应生成了λ(5)-磷杂环戊烷，这是一类用其他方法很难获得的罕见的磷杂环化合物。λ(5)-磷杂环戊烷的产率从 35%到 80%不等。通过单晶 X 射线衍射确定了两种磷杂环戊烷的结构。X 射线衍射和 NMR 谱数据表明磷杂环戊烷具有叶立德和芳构结构的叠加。
