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Beilstein J. Org. Chem. 2015, 11, 16–24, doi:10.3762/bjoc.11.3
Graphical Abstract
Figure 1: Bioactive compounds and agrochemicals with fluorinated pyrazoles.
Figure 2: Bioactive compounds with C2F5 group [34-36].
Figure 3: X-ray crystal structure of pyrazoles 10a, 19b and 20b [50].
Figure 4: Structure of the expected product 19a, and the observed isomeric one – 19b.
Scheme 1: Comparison of CF3CHN2 vs C2F5CHN2 in the reaction with alkyne 19.
Scheme 2: Synthesis of 3,4-disubstituted pyrazole 24.
Scheme 3: Synthesis of C2F5-substituted acids 25 and 27. In brackets are the known bioactive compounds DP-23, ...