Catalytic asymmetric alkylation of substituted isoflavanones.
Catalytic asymmetric alkylation of substituted isoflavanones.
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DOI:
10.1021/ol901676f
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发表时间:
2009-09-03
期刊:
影响因子:
5.2
通讯作者:
Scheidt KA
中科院分区:
文献类型:
--
作者:
Nibbs AE;Baize AL;Herter RM;Scheidt KA
The asymmetric alkylation of isoflavanones and protected 3-phenyl-2,3-dihydroquinolin-4(1H)-ones catalyzed by a novel cinchonidine-derived phase transfer catalyst E is reported. This functionalization occurs at the non-activated C3 methine to afford novel products that can easily be functionalized to generate more complex fused ring systems. The process accommodates a variety of isoflavanones and activated electrophiles and installs a stereogenic quaternary center in high yield and with good-to-excellent selectivity.
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