Domino retro Diels-Alder/Diels-Alder reaction: an efficient protocol for the synthesis of highly functionalized bicyclo[2.2.2]octenones and bicyclo[2.2.2]octadienones |
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| Authors: | Chittimalla Santhosh Kumar Shiao Hui-Yi Liao Chun-Chen |
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| Affiliation: | Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan. |
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| Abstract: | A novel and convenient approach, the domino retro Diels-Alder/Diels-Alder reaction sequence for highly stereo- and regioselective synthesis of various bicyclo[2.2.2]octenone and bicyclo[2.2.2]octadienone derivatives is presented. Thus, the masked o-benzoquinones (MOBs) 2a-e generated by the pyrolysis of the respective dimers 3a-e participated in this novel synthetic strategy with a variety of olefinic and acetylenic dienophiles at 220 degrees C to provide the title compounds in good to excellent yields. |
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