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.
Browne, Duncan L.; Vivat, Jerome F.; Plant, Andrew, Journal of the American Chemical Society, 2009, vol. 131, p. 7762 - 7769
作者:Browne, Duncan L.、Vivat, Jerome F.、Plant, Andrew、Gomez-Bengoa, Enrique、Harrity, Joseph P. A.
DOI:——
日期:——
Improved Method for the Iodination of Sydnones
作者:Daniel C. Brown、Kenneth Turnbull
DOI:10.1080/00397911.2013.779713
日期:2013.12.2
Iodination at the sydnone C-4 position has been achieved in good yields for a series of 3-arylsydnones using N-iodosuccinimide in acetic acid. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resources: Full experimental and spectral details.]