Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 131, Issue 39, Pages 13930-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja906520p
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A novel paradigm for the activation of alcohols toward nucleophilic displacement via formation of cyclopropenium ethers is described. The conversion of a range of alcohol substrates to the corresponding alkyl chlorides occurs rapidly upon treatment with 3,3-dichloro-1,2-diphenylcyclopropene. H-1 NMR data support the intermediacy of a cyclopropenium intermediate, and the reaction is demonstrated to proceed primarily via the S(N)2 mechanism for 1-phenylethanol. A total of 12 examples of substrate scope are provided.
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