Research output: Contribution to journal › Article › peer-review
Unexpected Ring Opening During the Imination of Camphor-Type Bicyclic Ketones. / Chernyshov, Vladimir V.; Yarovaya, Olga I.; Vatsadze, Sergey Z. et al.
In: European Journal of Organic Chemistry, Vol. 2021, No. 3, 22.01.2021, p. 452-463.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Unexpected Ring Opening During the Imination of Camphor-Type Bicyclic Ketones
AU - Chernyshov, Vladimir V.
AU - Yarovaya, Olga I.
AU - Vatsadze, Sergey Z.
AU - Borisevich, Sophia S.
AU - Trukhan, Sergey N.
AU - Gatilov, Yuri V.
AU - Peshkov, Roman Yu
AU - Eltsov, Ilia V.
AU - Martyanov, Oleg N.
AU - Salakhutdinov, Nariman F.
N1 - Funding Information: The authors would like to express their gratitude to the Collective Use Chemical Service Center of the Siberian Branch of Russian Academy of Sciences for the obtained spectra and analytical data, as well as Dr. A.A. Nefedov (N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS) for the study of enantiomeric purity of reaction mixtures. All calculations were carried out on a cluster computer in the regional centre for shared computer equipment at the Ufa Institute of Chemistry UFRC RAS. The reported study was funded by RFBR, project number 19‐33‐90080. Publisher Copyright: © 2020 Wiley-VCH GmbH Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021/1/22
Y1 - 2021/1/22
N2 - A new ring opening reaction was found while attempting to isolate the imines from ortho-heteroatom substituted anilines and camphor-like bicyclic ketones. The benzoazoles containing a cyclopentanemethyl group at position 2 of the heterocycle were isolated instead of the expected imines. The detailed study of the transformation, including EPR experiments, revealed the most probable radical mechanism. The proposed reaction pathways were confirmed by quantum chemical calculations. The dichotomy of 1–2 and 2–3 bonds cleavage is discussed together with the evaluation of the stereochemical outcome of the reactions. The benzoazoles obtained via the new reaction are of particular interest for the medicinal chemistry.
AB - A new ring opening reaction was found while attempting to isolate the imines from ortho-heteroatom substituted anilines and camphor-like bicyclic ketones. The benzoazoles containing a cyclopentanemethyl group at position 2 of the heterocycle were isolated instead of the expected imines. The detailed study of the transformation, including EPR experiments, revealed the most probable radical mechanism. The proposed reaction pathways were confirmed by quantum chemical calculations. The dichotomy of 1–2 and 2–3 bonds cleavage is discussed together with the evaluation of the stereochemical outcome of the reactions. The benzoazoles obtained via the new reaction are of particular interest for the medicinal chemistry.
KW - (−)-Fenchone
KW - Benzimidazoles
KW - Camphor
KW - Monoterpenoids
KW - Single-stage synthesis
KW - AUXILIARY BASIS-SETS
KW - NONNUCLEOSIDE INHIBITORS
KW - BENZIMIDAZOLE DERIVATIVES
KW - DOCKING
KW - MEDIATED SYNTHESIS
KW - BENZOXAZOLE
KW - MOLECULES
KW - BIOLOGICAL EVALUATION
KW - HIV-1 REVERSE-TRANSCRIPTASE
KW - ANTIFUNGAL
KW - (−
KW - )-Fenchone
UR - http://www.scopus.com/inward/record.url?scp=85097617232&partnerID=8YFLogxK
U2 - 10.1002/ejoc.202001397
DO - 10.1002/ejoc.202001397
M3 - Article
AN - SCOPUS:85097617232
VL - 2021
SP - 452
EP - 463
JO - European Journal of Organic Chemistry
JF - European Journal of Organic Chemistry
SN - 1434-193X
IS - 3
ER -
ID: 27063915