Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
J Org Chem. 2010 Feb 5;75(3):984-7. doi: 10.1021/jo902514v.
The cycloaddition of 4-iodosydnones with terminal alkynes proceeds with excellent regiocontrol to provide 5-iodo pyrazoles. These products participate smoothly in subsequent C-C and C-heteroatom bond forming processes.
4-碘代苯并[d]恶唑啉-2,3-二酮与末端炔烃的环加成反应具有极好的区域选择性,生成 5-碘代吡唑。这些产物可以顺利地参与后续的 C-C 和 C-杂原子键形成过程。