83442-59-5Relevant academic research and scientific papers
New pyrazoles by 1,3-dipolar cycloaddition reactions between sydnones and activated alkynes
Dumitra?cu, Florea,Drǎghici, Constantin,Vuluga, Daniela,Cǎproiu, Miron Teodor
, p. 255 - 260 (2007/10/03)
The 3-(2,4-dimethylphenyl)sydnone(8a) was halogenated at the 4-position giving 4-halogenosydnones 8b-d. The 1,3-dipolar cycloaddition reactions of sydnones 8 with symmetrical and non-symmetrical acetylenic esters afforded pyrazoles 9a-g, 10a,b and 11, res
Bromination of Sydnones. I. Reaction with 3-Arylsydnones Containing Electron-Donors on the Aryl Ring
Turnbull, Kenneth
, p. 965 - 968 (2007/10/02)
Bromination has been examined for a series of 3-arylsydnones (1) with electron donors (dimethyl to dimethoxy) on the aryl ring.In no example was exclusive aryl ring bromination observed, however, exclusive sydnone ring bromination could be realized in every case.For two dimethoxyphenyl examples both aryl and sydnone ring bromination occurred.
