Facile Double-Lithiation of a Transient Urea: Vicarious <i>ortho</i>-Metalation of Aniline Derivatives
作者:Chris E. Houlden、Guy C. Lloyd-Jones、Kevin I. Booker-Milburn
DOI:10.1021/ol101102y
日期:2010.7.2
A convenient one-pot method for the conversion of phenylisocyanate into ortho-functionalized aniline derivatives has been developed. The reaction proceeds via the selective ortho-metalation of a transient labile urea, which can be considered as a synthetic equivalent of 2-lithiophenylisocyanate, a highly improbable intermediate.