Diene synthesis of 2-tropylcyclohexanone with N-phenylmaleimide
摘要
The [4π+2π]-cycloaddition of N-phenylmaleimide to 2-tropylcyclohexanone was performed to prepare previously unknown 9-(2-oxocyclohexyl)-4-phenyl-4-azatetra-cyclo[5.3.2.02,6.08,10]dodec-11-ene-3,5-dione in 92% yield. The structure of the azacyclic compound was established by modern methods, including 1D and 2D NMR spectroscopy and X-ray diffraction analysis.