One-Pot Synthesis of CF3-Substituted Pyrazolines/Pyrazoles from Electron-Deficient Alkenes/Alkynes and CF3CHN2 Generated in situ: Optimized Synthesis of Tris(trifluoromethyl)pyrazole
Eur. J. Org. Chem. , 2014, 12, 2487-2495
DOI: 10.1002/ejoc.201301852
Slobodyanyuk E. Y.; Artamonov O. S.; Shishkin O. V.; Mykhailiuk P. K.
The [3+2] cycloaddition of CF3CHN2, generated in situ, with electron-deficient alkenes/alkynes affords CF3-substituted pyrazolines/pyrazoles in quantitative yields. The one-pot three-component reaction between CF3CH2NH2•HCl, NaNO2, and the substrate proceeds at room temperature in dichloromethane/water.
Slobodyanyuk E. Y.; Artamonov O. S.; Shishkin O. V.; Mykhailiuk P. K.
Eur. J. Org. Chem. 2014, 12, 2487-2495
DOI: 10.1002/ejoc.201301852