Stereoselective Synthesis of alpha-Diazo Oxime Ethers and Their Application in the Synthesis of Highly Substituted Pyrroles through a [3+2] Cycloaddition
The stereoselective diazo transfer reaction with oxime ethers offers an efficient route to the corresponding α-diazo oxime ethers. The utility of these compounds has been demonstrated by the synthesis of highly substituted pyrroles through a [3+2] cycloaddition of α-oximino carbenoids with enamines (see scheme).