Biomimetic enantioselective synthesis of β,β-difluoro-α-amino acid derivatives
Keyword(s):
AbstractAlthough utilization of fluorine compounds has a long history, synthesis of chiral fluorinated amino acid derivatives with structural diversity and high stereoselectivity is still very appealing and challenging. Here, we report a biomimetic study of enantioselective [1,3]-proton shift of β,β-difluoro-α-imine amides catalyzed by chiral quinine derivatives. A wide range of corresponding β,β-difluoro-α-amino amides were achieved in good yields with high enantioselectivities. The optically pure β,β-difluoro-α-amino acid derivatives were further obtained, which have high application values in the synthesis of fluoro peptides, fluoro amino alcohols and other valuable fluorine-containing molecules.
2005 ◽
Vol 16
(7)
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pp. 1309-1319
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2015 ◽
Vol 137
(29)
◽
pp. 9438-9442
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2018 ◽
Vol 16
(25)
◽
pp. 4633-4640
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