ANTHRONE ADDITION TO NITROOLEFINS
747
and extracted with ethyl acetate. The organic layer was treated with anhydrous
Na2SO4 and evaporated under reduced pressure to give the crude product.
Purification has been done by column chromatography using silica gel and ethyl
acetate–petroleum ether (1:9). The products were characterized by 1H and
13C NMR and compared with those reported in the literature.
ACKNOWLEDGMENTS
We are grateful to the research council of Sharif University of Technology
for financial support. We also thank the Faculty of Chemistry of Tarbiat Moallem
University for support of this work.
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