Synthesis of α-halo-α,α-difluoromethyl ketones by a trifluoroacetate release/halogenation protocol.

Synthesis of α-halo-α,α-difluoromethyl ketones by a trifluoroacetate release/halogenation protocol.
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DOI:
10.1021/jo2017179
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发表时间:
2011-11-04
影响因子:
3.6
通讯作者:
Colby, David A.
Colby, David A.
中科院分区:
化学2区
文献类型:
--
作者:
John, Jinu P.;Colby, David A.

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Three series of α-halo-α,α-difluoromethyl ketones are prepared from highly α-fluorinated gem-diols by exploiting the facile release of trifluoroacetate, followed by immediate trapping of the liberated α,α-difluoroenolate with an electrophilic chlorine, bromine, or iodine source. The products are typically isolated in good yields, even in the case of sensitive, α-iodo-α,α-difluoromethyl ketones. Also, we demonstrate that an α-iodo-α,α-difluoromethyl ketone will participate in a copper-promoted reaction to forge a new carbon–carbon bond.
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