High yield protection of alcohols, including tertiary and base sensitive alcohols, as benzhydryl ethers by heating with diphenyldiazomethane in the absence of any other reagent
作者:Daniel Best、Sarah F. Jenkinson、Sebastian D. Rule、Rosemary Higham、Thomas B. Mercer、Richard J. Newell、Alexander C. Weymouth-Wilson、George W.J. Fleet、Sigthor Petursson
DOI:10.1016/j.tetlet.2008.02.042
日期:2008.3
can be introduced efficiently without the need for any acid or base catalysis and which is not prone to acid or base catalysed migration is a significant advantage for many syntheses. Benzhydryl [diphenylmethyl] ethers of sugar lactones are formed in high yield under neutral conditions when the corresponding alcohol is heated with diphenyldiazomethane in an inert solvent such as acetonitrile or toluene;