Synthesis and Crystal Structure of 1,7,8,9-Tetrachloro-N-ethyl-10,10-dimethoxy-4-azatricyclo(5,2,1,0~(2,6))dec-8-ene-3,5-dione

摘要

1,7,8,9-Tetrachloro-N-ethyl-10,10-dimethoxy-4-azatricyclo(5,2,1,0~(2,6))dec-8-ene-3,5-dione was obtained by Diels-Alder reaction between N-ethylmaleimide with 5,5-dimethoxy-1,2,3,4-tetrachlorocyclopentadiene in toluene. Its structure was characterized by elemental analysis, ~1H NMR, MS and X-ray single-crystal diffraction techniques. The title compounds comprise a polycyclic fused pyrrolidine ring system. Two methoxyl groups lied in symmetry axis on the top of "chair" cycloheptane structure.