Generation of Sulfur-Functionalized Nitrile Oxide, (Phenylthio)acetonitrile Oxide, and Synthetic Applications
作者:Shuji Kanemasa、Yasumasa Norisue、Hiroyuki Suga、Otohiko Tsuge
DOI:10.1246/bcsj.61.3973
日期:1988.11
The first generation of a new sulfur-functionalized nitrile oxide 1,3-dipole, (phenylthio)acetonitrile oxide, is presented. Its cycloadditions to a variety of olefins and acetylenes lead to 3-(phenylthiomethyl)-2-isoxazolines and -oxazoles, the formers being selectively deprotonated at the carbon substituted by the sulfur moiety. The resulting sulfur-stabilized carbanions react with aldehydes, esteric
介绍了第一代新型硫功能化腈氧化物 1,3-偶极(苯硫基)乙腈氧化物。其与各种烯烃和乙炔的环加成生成 3-(苯硫甲基)-2-异恶唑啉和 -恶唑,前者在被硫部分取代的碳上被选择性地去质子化。所得硫稳定的碳负离子与醛、酯类迈克尔受体和卤代烷反应,从而能够在 3 位侧链上引入碳取代基。这些 2-异恶唑啉的 Raney Ni 还原得到 β,β'-二羟基酮和 β-羟基酮。