Ultrasonic synthesis and crystal structure analysis of two trimethylsilyloxy-substituted bicyclo2.2.2octene derivatives

摘要

The compounds: 11-trimethylsilyloxy-1,2,3,4,4a,9a-hexahydro-1,4-etheno- anthraquinone and 4-benzyl-8-trimethylsilyloxy-4-aza-tricyclo5.2.2.0undec-8- ene-3,5-dione were synthesized by the Diels-Alder 4 Ï s + 2 Ï s cycloaddition reaction of 2-(trimethylsilyloxy)-1,3-cyclohexadiene with naphthaquinone and N-benzylmaleimide under ultrasonic conditions. The crystal structure analysis was done using single crystal X-ray diffraction method. In both the compounds, the trimethylsilyloxy- and naphthaquinone/ N-benzylmaleimide moieties are endo- to the bicyclic ring. Figure not available: see fulltext. © 2013 Indian Academy of Sciences.