Annelated 4,5-diazaspiro[2.4]hepta-4,6-diene obtained by [3 + 2] Cycloaddition of Diazocyclopropane to Cyclooctyne
作者:Evgeny V. Shulishov、Yury V. Tomilov、Oleg M. Nefedov
DOI:10.1016/j.mencom.2013.07.002
日期:2013.7
diazocyclopropane generated in situ to cyclooctyne at –30 to –25 °C afforded highly reactive spiro(9,10-diazabicyclo[6.3.0]undeca-1(8),9-diene-11,1’-cyclopropane) which can add nucleophiles to the azocyclopropane fragment or undergo oligomerization with three-membered ring opening.
在–30至–25°C下,将原位生成的重氮环丙烷的1,3-偶极环加成反应生成环辛炔,可提供高反应性螺(9,10-diazabicyclo [6.3.0] undeca-1(8),9-diene-11, 1'-环丙烷),可以将亲核试剂添加到偶氮环丙烷片段中或通过三元开环进行低聚。