Research output: Contribution to journal › Article › peer-review
Primary Vinyl Ethers as Acetylene Surrogate : A Flexible Tool for Deuterium-Labeled Pyrazole Synthesis. / Ledovskaya, Maria S.; Voronin, Vladimir V.; Polynski, Mikhail V.; Lebedev, Andrey N.; Ananikov, Valentine P.
In: European Journal of Organic Chemistry, Vol. 2020, No. 29, 09.08.2020, p. 4571-4580.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Primary Vinyl Ethers as Acetylene Surrogate
T2 - A Flexible Tool for Deuterium-Labeled Pyrazole Synthesis
AU - Ledovskaya, Maria S.
AU - Voronin, Vladimir V.
AU - Polynski, Mikhail V.
AU - Lebedev, Andrey N.
AU - Ananikov, Valentine P.
N1 - Publisher Copyright: © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/8/9
Y1 - 2020/8/9
N2 - A novel synthetic path to 1,3-disubstituted pyrazoles and their deuterated derivatives was developed. It is based on the reaction of vinyl ethers with hydrazonoyl chlorides in the presence of triethylamine. The reaction mechanism, clarified by the joint experimental and computational study, involves 1,3-dipolar cycloaddition of the in situ generated nitrile imines to vinyl ethers and subsequent cleavage of alcohol from the formed alkoxypyrazoline. The results highlight the possibility of using vinyl ethers as acetylene surrogate and provide a novel access to pyrazoles, 4,5-dideuteropyrazoles and their regioselectively labeled derivatives, 5-deuteropyrazoles.
AB - A novel synthetic path to 1,3-disubstituted pyrazoles and their deuterated derivatives was developed. It is based on the reaction of vinyl ethers with hydrazonoyl chlorides in the presence of triethylamine. The reaction mechanism, clarified by the joint experimental and computational study, involves 1,3-dipolar cycloaddition of the in situ generated nitrile imines to vinyl ethers and subsequent cleavage of alcohol from the formed alkoxypyrazoline. The results highlight the possibility of using vinyl ethers as acetylene surrogate and provide a novel access to pyrazoles, 4,5-dideuteropyrazoles and their regioselectively labeled derivatives, 5-deuteropyrazoles.
KW - Cycloaddition
KW - Deuterium
KW - Deuteropyrazole
KW - Isotopic labeling
KW - Vinyl ethers
KW - AUXILIARY BASIS-SETS
KW - HYDROXYLAMINE
KW - ONE-POT SYNTHESIS
KW - MOLECULAR-ORBITAL METHODS
KW - THERMOCHEMISTRY
KW - DRUG DISCOVERY
KW - CALCIUM CARBIDE
KW - NUCLEOPHILIC-ADDITION
KW - REGIOSELECTIVITY
KW - 1,3-DIPOLAR CYCLOADDITION
UR - http://www.scopus.com/inward/record.url?scp=85088120457&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/23802b10-5d0a-36b1-99a0-a0cfe21a39f4/
U2 - 10.1002/ejoc.202000674
DO - 10.1002/ejoc.202000674
M3 - Article
AN - SCOPUS:85088120457
VL - 2020
SP - 4571
EP - 4580
JO - European Journal of Organic Chemistry
JF - European Journal of Organic Chemistry
SN - 1434-193X
IS - 29
ER -
ID: 61006485