Research output: Contribution to journal › Article › peer-review
Regioselective Synthesis of 2-Trimethylsilyl-4H-pyran-4-ones from 1-Ethoxy(hydroxy)-5-(trimethylsilyl)pentenynones. / Панькова, Алена Сергеевна; Голубев, Павел Романович; Молин, Илья Александрович; Ростовский, Николай Витальевич.
In: European Journal of Organic Chemistry, Vol. 26, No. 34, e202300573, 17.08.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Regioselective Synthesis of 2-Trimethylsilyl-4H-pyran-4-ones from 1-Ethoxy(hydroxy)-5-(trimethylsilyl)pentenynones
AU - Панькова, Алена Сергеевна
AU - Голубев, Павел Романович
AU - Молин, Илья Александрович
AU - Ростовский, Николай Витальевич
PY - 2023/8/17
Y1 - 2023/8/17
N2 - Exclusive formation of 5-aryl-2-trimethylsilyl-4H-pyran-4-ones is accomplished by a regioselective cyclization of 2-aryl-1-ethoxy(hydroxy)-5-(trimethylsilyl)pent-1-en-4-yn-3-ones. This cyclization occurs in a 6-endo-dig mode through addition to the β-atom of the TMS substituted triple bond. The reaction was found to be general for a range of ethoxyenynones upon heating in glacial acetic acid and for analogous hydroxyenynones in diphenyl ether. Plausible mechanistic explanation and possible post-modifications of resulting pyranones are offered.
AB - Exclusive formation of 5-aryl-2-trimethylsilyl-4H-pyran-4-ones is accomplished by a regioselective cyclization of 2-aryl-1-ethoxy(hydroxy)-5-(trimethylsilyl)pent-1-en-4-yn-3-ones. This cyclization occurs in a 6-endo-dig mode through addition to the β-atom of the TMS substituted triple bond. The reaction was found to be general for a range of ethoxyenynones upon heating in glacial acetic acid and for analogous hydroxyenynones in diphenyl ether. Plausible mechanistic explanation and possible post-modifications of resulting pyranones are offered.
KW - cyclization
KW - enynone
KW - pyran-4-one
KW - synthetic methods
UR - https://www.mendeley.com/catalogue/0e623622-b785-3940-92f4-0eeeabfc3f0e/
U2 - 10.1002/ejoc.202300573
DO - 10.1002/ejoc.202300573
M3 - Article
VL - 26
JO - European Journal of Organic Chemistry
JF - European Journal of Organic Chemistry
SN - 1434-193X
IS - 34
M1 - e202300573
ER -
ID: 110605535