Synthesis of 3-Fluoropyrazolo[1,5-A]Pyridines by Fluorination of Methyl Pyrazolo[1,5-A]Pyridine-3-Carboxylates. / Alieva, Sabina V.; Vorob’ev, Aleksey Yu.
In: Chemistry of Heterocyclic Compounds, Vol. 56, No. 7, 01.07.2020, p. 957-960.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Synthesis of 3-Fluoropyrazolo[1,5-A]Pyridines by Fluorination of Methyl Pyrazolo[1,5-A]Pyridine-3-Carboxylates
AU - Alieva, Sabina V.
AU - Vorob’ev, Aleksey Yu
PY - 2020/7/1
Y1 - 2020/7/1
N2 - The reaction of methyl esters of pyrazolo[1,5-a]pyridine-2,3-dicarboxylic and 2-phenylpyrazolo[1,5-a]pyridine-3-carboxylic acids with the fluorinating reagent Selectfluor gave 3-fluoropyrazolo[1,5-a]pyridine-2-carboxylic acid methyl ester and 3-fluoro-2-phenylpyrazolo- [1,5-a]pyridine. Monitoring the progress of the reaction by 1H NMR spectroscopy showed the formation of an intermediate fluorinecontaining σ-complex.
AB - The reaction of methyl esters of pyrazolo[1,5-a]pyridine-2,3-dicarboxylic and 2-phenylpyrazolo[1,5-a]pyridine-3-carboxylic acids with the fluorinating reagent Selectfluor gave 3-fluoropyrazolo[1,5-a]pyridine-2-carboxylic acid methyl ester and 3-fluoro-2-phenylpyrazolo- [1,5-a]pyridine. Monitoring the progress of the reaction by 1H NMR spectroscopy showed the formation of an intermediate fluorinecontaining σ-complex.
KW - electrophilic fluorination
KW - pyrazolo[1,5-a]pyridines
KW - Selectfluor
KW - IBUDILAST
KW - IMINES
UR - http://www.scopus.com/inward/record.url?scp=85089751387&partnerID=8YFLogxK
U2 - 10.1007/s10593-020-02757-7
DO - 10.1007/s10593-020-02757-7
M3 - Article
AN - SCOPUS:85089751387
VL - 56
SP - 957
EP - 960
JO - Chemistry of Heterocyclic Compounds
JF - Chemistry of Heterocyclic Compounds
SN - 0009-3122
IS - 7
ER -
ID: 25290124