Radical Addition of Alkyl Halides to Formaldehyde in the Presence of Cyanoborohydride as a Radical Mediator. A New Protocol for Hydroxymethylation Reaction
T Kawamoto, T Fukuyama, I Ryu
Index: Kawamoto, Takuji; Fukuyama, Takahide; Ryu, Ilhyong Journal of the American Chemical Society, 2012 , vol. 134, # 2 p. 875 - 877
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Citation Number: 27
Abstract
Hydroxymethylation of alkyl halides was achieved using paraformaldehyde as a radical C1 synthon in the presence of tetrabutylammonium cyanoborohydride as a hydrogen source. The reaction proceeds via a radical chain mechanism involving an alkyl radical addition to formaldehyde to form an alkoxy radical, which abstracts hydrogen from a hydroborate anion.
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