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Reactions of Alkyl β‐Nitroacrylates with Arenes in Triflic Acid: Synthesis of Oximes of Alkyl 2,3‐Diaryl‐3‐oxopropanoates. / Zhelonkina, Yuliya V.; Khoroshilova, Olesya V.; Ivanov, Alexander Yu.; Boyarskaya, Irina A.; Pelipko, Vasilii V.; Makarenko, Sergey V.; Vasilyev, Aleksander V.
в: ChemistrySelect, Том 8, № 39, e2021302205, 18.10.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Reactions of Alkyl β‐Nitroacrylates with Arenes in Triflic Acid: Synthesis of Oximes of Alkyl 2,3‐Diaryl‐3‐oxopropanoates
AU - Zhelonkina, Yuliya V.
AU - Khoroshilova, Olesya V.
AU - Ivanov, Alexander Yu.
AU - Boyarskaya, Irina A.
AU - Pelipko, Vasilii V.
AU - Makarenko, Sergey V.
AU - Vasilyev, Aleksander V.
N1 - Zhelonkina Yu.V., Khoroshilova O.V., Ivanov A.Yu., Boyarskaya I.A., Pelipko V.V., Makarenko S.V., Vasilyev A.V. Reactions of alkyl β-nitroacrylates with arenes in triflic acid: synthesis of oximes of alkyl 2,3-diaryl-3-oxopropanoates. ChemistrySelect. 2023, V. 8, N. 39, e2021302205.
PY - 2023/10/18
Y1 - 2023/10/18
N2 - Methyl or ethyl 3-nitropropenoates (β-nitroacrylates) AlkO(O)C1−C2H=C3H−NO2 in reaction with arenes ArH in triflic acid CF3SO3H (TfOH) at room temperature in 1 h give rise to oximes of alkyl 2,3-diaryl-3-oxopropanoates AlkO(O)C−CH(Ar)−C(Ar)=NOH in yields of 42–92 %. The obtained oximes bearing ortho-methyl substituents in the aryl ring exist as atropoisomers in solutions. The study of protonated forms of β-nitroacrylates by NMR and DFT calculations has revealed that the reactive electrophiles are species AlkO(HO+)C1−C2H=C3H−N+(O)(OH) protosolvated on the acceptor groups NO2 and CO2R. Plausible reaction mechanism is based on the primary interaction of aromatic nucleophiles with these electrophilic species onto their carbon C2.
AB - Methyl or ethyl 3-nitropropenoates (β-nitroacrylates) AlkO(O)C1−C2H=C3H−NO2 in reaction with arenes ArH in triflic acid CF3SO3H (TfOH) at room temperature in 1 h give rise to oximes of alkyl 2,3-diaryl-3-oxopropanoates AlkO(O)C−CH(Ar)−C(Ar)=NOH in yields of 42–92 %. The obtained oximes bearing ortho-methyl substituents in the aryl ring exist as atropoisomers in solutions. The study of protonated forms of β-nitroacrylates by NMR and DFT calculations has revealed that the reactive electrophiles are species AlkO(HO+)C1−C2H=C3H−N+(O)(OH) protosolvated on the acceptor groups NO2 and CO2R. Plausible reaction mechanism is based on the primary interaction of aromatic nucleophiles with these electrophilic species onto their carbon C2.
KW - atropoisomers
KW - cations
KW - nitroacrylates
KW - oximes
KW - triflic acid
UR - https://www.mendeley.com/catalogue/79d72a39-d2e0-3ad1-a993-05caa83ce543/
U2 - 10.1002/slct.202302205
DO - 10.1002/slct.202302205
M3 - Article
VL - 8
JO - ChemistrySelect
JF - ChemistrySelect
SN - 2365-6549
IS - 39
M1 - e2021302205
ER -
ID: 113744706