Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - 2-(2-(Dimethylamino)vinyl)-4H-pyran-4-ones as Novel and Convenient Building-Blocks for the Synthesis of Conjugated 4-Pyrone Derivatives
AU - Obydennov, Dmitrii L.
AU - Nigamatova, Diana I.
AU - Shirinkin, Alexander S.
AU - Melnikov, Oleg E.
AU - Fedin, Vladislav V.
AU - Usachev, Sergey A.
AU - Simbirtseva, Alena E.
AU - Kornev, Mikhail Y.
AU - Sosnovskikh, Vyacheslav Y.
N1 - This research was funded by the Russian Science Foundation, grant number 18-13-00186 (https://rscf.ru/project/18-13-00186/ (accessed on 12 December 2022)).
PY - 2022/12/13
Y1 - 2022/12/13
N2 - A straightforward approach for the construction of the new class of conjugated pyrans based on enamination of 2-methyl-4-pyrones with DMF-DMA was developed. 2-(2-(Dimethylamino)vinyl)-4-pyrones are highly reactive substrates that undergo 1,6-conjugate addition/elimination or 1,3-dipolar cycloaddition/elimination followed by substitution of the dimethylamino group without ring opening. This strategy includes selective transformations leading to conjugated and isoxazolyl-substituted 4-pyrone structures. The photophysical properties of the prepared 4-pyrones were determined in view of further design of novel merocyanine fluorophores. A solvatochromism was found for enamino-substituted 4-pyrones accompanied by a strong increase in fluorescence intensity in alcohols. The prepared conjugated structures demonstrated valuable photophysical properties, such as a large Stokes shift (up to 204 nm) and a good quantum yield (up to 28%).
AB - A straightforward approach for the construction of the new class of conjugated pyrans based on enamination of 2-methyl-4-pyrones with DMF-DMA was developed. 2-(2-(Dimethylamino)vinyl)-4-pyrones are highly reactive substrates that undergo 1,6-conjugate addition/elimination or 1,3-dipolar cycloaddition/elimination followed by substitution of the dimethylamino group without ring opening. This strategy includes selective transformations leading to conjugated and isoxazolyl-substituted 4-pyrone structures. The photophysical properties of the prepared 4-pyrones were determined in view of further design of novel merocyanine fluorophores. A solvatochromism was found for enamino-substituted 4-pyrones accompanied by a strong increase in fluorescence intensity in alcohols. The prepared conjugated structures demonstrated valuable photophysical properties, such as a large Stokes shift (up to 204 nm) and a good quantum yield (up to 28%).
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85144489390
UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000904269600001
U2 - 10.3390/molecules27248996
DO - 10.3390/molecules27248996
M3 - Article
VL - 27
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 24
M1 - 8996
ER -
ID: 33229831