期刊
CHEMICAL SCIENCE
卷 4, 期 3, 页码 1308-1311出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2sc22027j
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资金
- NEXT
- MEXT
- Program for Leading Graduate Schools in Nagoya University
- JSPS
A catalyst-controlled, geometrically divergent asymmetric Michael addition of azlactones to methyl propiolate has been achieved under the catalysis of P-spiro chiral triaminoiminophosphoranes. An uncommon O-protonation of the intermediary allenic enolate is proposed to rationalize geometric control and its validity is proven by the development of highly Z- and enantioselective Michael addition of azlactones to cyanoacetylene with broad substrate scope.
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