Abstract
The synthesis of formylated 1-phenyl-1H-pyrazole derivatives under the Duff reaction conditions is reported. Our results indicate that 1-phenyl-1H-pyrazole systems containing electron-withdrawing and electron-donating substituents at the phenyl moiety react under the Duff reaction conditions to furnish formylated derivatives in good yields.
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ACKNOWLEDGMENTS
We are thankful to FAPEG CH02/2007, CAPES, CNPq, FAPEMIG, and INCT-INOFAR for grants and financial support.
Notes
a Determined by NMR and GC-MS.