Efficient Preparation of [1-15N]-3-Cyano-4-methyl-1H-pyrrole by a Wittig-Based Strategy
作者:Prativa B. S. Dawadi、Johan Lugtenburg
DOI:10.1002/ejoc.200800079
日期:2008.5
3-Cyano-4-methyl-1H-pyrrole (1) was prepared by a new Wittig procedure from simple, commercially available starting materials in four steps with an overall yield of 39 %. Similarly, [1-15N]-3-cyano-4-methyl-1H-pyrrole (1a) was prepared starting from [15N]-phthalimide. In this synthesis, Wittig coupling was used to form the central C–C bond of intermediate 6, which has nitrile and methyl substituents