- 1,3-DIOL SYNTHESIS VIA CONTROLLED, RADICAL-MEDIATED C-H FUNCTIONALIZATION
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The conversion of an alcohol into a 1,3- diol via controlled, radical-mediated C-H functionalization has been demonstrated. The method entails nearly quantitative conversion of an alcohol to the corresponding N-substitutedcarbamate, followed by a variant
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Page/Page column 34-35
(2010/01/29)
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- 1,3-Diol synthesis via controlled, radical-mediated C-H functionalization
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The invention of a method for the synthesis of 1,3-diols from the corresponding alcohols is described, via controlled, radical-mediated C-H functionalization. The sequence described herein entails near quantitative conversion to the corresponding trifluoroethyl carbamate, followed by a variant of the Hofmann-Loffler-Freytag reaction, cyclization, and hydrolysis to provide the 1,3-diols. In addition to the 10 examples presented herein, the syntheses of four natural products are facilitated by this directed oxyfunctionalization. This methodology is demonstrated to be orthogonal to other known C-H oxidations. Finally, this sequence is efficient, practical, inexpensive, and scalable. Copyright
- Chen, Ke,Richter, Jeremy M.,Baran, Phil S.
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p. 7247 - 7249
(2008/12/21)
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