期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 9, 期 22, 页码 7849-7859出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ob06125a
关键词
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资金
- University of Minnesota
- National Science Foundation
The cyclization of 2,5-cyclohexadienones tethered to activated methylene groups was studied. The substitution around the cyclohexadienone ring serves to regioselectively direct these cyclizations based primarily on electronic effects. In the case of brominated substrates, these reactions proceed to give highly unusual electron-deficient tricyclic cyclopropanes. By using a Cinchona alkaloid-based phase-transfer catalyst, prochiral cyclohexadienones can be desymmetrized with moderate stereoselectivity.
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