Direct conversion of aldehydes into nitriles via O-phenylcarbamoylated aldoximes
作者:Necdet Coşkun、Nevin Arikan
DOI:10.1016/s0040-4020(99)00692-4
日期:1999.10
hydroxylamine tosylate reacts with aldehydes at room temperature to give the corresponding O-carbamoylated oximes. The reaction of carbamoylated hydroxylamine with aromatic aldehydes in THF or in toluene at reflux affords the corresponding nitriles and anilinium tosylate in high yield. Attempts to cyclize compounds 2 in the presence of AcCl lead again to the formation of nitriles.
Solvent-Controlled Bifurcated Cascade Process for the Selective Preparation of Dihydrocarbazoles or Dihydropyridoindoles
作者:Dong-Liang Mo、Donald J. Wink、Laura L. Anderson
DOI:10.1002/chem.201403268
日期:2014.10.6
A solvent‐controlled cascadeprocess has been identified for the dual purpose of the preparation of either dihydrocarbazoles or dihydropyridoindoles from identical N‐aryl‐α,β‐unsaturated nitrones and electron‐deficient allene starting materials. These reactions proceed smoothly under mild metal‐free conditions affording a range of two types of skeletally distinct indole‐based heterocycles in high yield