Five-membered ring systems: With more than 1 N atom DOI
Larry Yet

Progress in heterocyclic chemistry, Год журнала: 2024, Номер unknown, С. 211 - 257

Опубликована: Янв. 1, 2024

Язык: Английский

Progress on Cobalt-Catalyzed C(sp2)—H Activation for the Construction of Nitrogen-Containing Benzo Heterocycles DOI
Xun Tian, Guogang Deng, Xiaodong Yang

и другие.

Chinese Journal of Organic Chemistry, Год журнала: 2025, Номер 45(2), С. 655 - 655

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Cyclocondensation of 2-(α-Diazoacyl)-2H-azirines with Amidines in Diazo Synthesis of Functionalized Naphtho[1,2-d]imidazoles DOI
Timur O. Zanakhov, Екатерина Е. Галенко, Михаил С. Новиков

и другие.

The Journal of Organic Chemistry, Год журнала: 2024, Номер 89(12), С. 8641 - 8655

Опубликована: Июнь 7, 2024

A diazo approach toward functionalized naphtho[1,2-d]imidazole derivatives has been developed. It involved a new reaction of arylamidines with 2-(α-diazoacyl)-2H-azirines giving 5-aryl-4-(α-diazoacyl)-1H-imidazoles under mild conditions in good yields. The mechanism annulation azirines amidines is discussed based on DFT calculations. proceeds an unusual manner by cleavage the azirine C–C bond, allowing for transfer aryl substituent from arylamidine to proper position key intermediate synthesis. Under thermolysis conditions, undergo Wolff rearrangement followed selective 6π-cyclization transient ketene form 3H-naphtho[1,2-d]imidazoles bearing various substituents positions 2,3,4,5,7,8,9. Additionally, variation at 5 naphtho[1,2-d]imidazoles possible through formation triflates and subsequent cross-coupling reactions. One more heterocyclic pharmacophoric skeleton, 3H-furo[3′,2':3,4]naphtho[1,2-d]imidazole, was easily constructed methyl 5-hydroxy-3H-naphtho[1,2-d]imidazole-4-carboxylates one-pot mode using O-alkylation phenacyl bromides base-induced intramolecular acyl substitution room temperature high

Язык: Английский

Процитировано

2

Benzocyclobutenone Synthesis Exploiting Acylsilanes as Photofunctional Directing Groups DOI Creative Commons
Rowan L. Pilkington,

Hannah J. Ross,

Liselle Atkin

и другие.

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

The visible-light irradiation of acylsilane tethered vinyl ketones promotes an intramolecular Stetter-type reaction

Язык: Английский

Процитировано

2

DMF as amine source: iron-catalyzed cyclization of 2H-azirines to imidazoles DOI
Mi‐Na Zhao,

Zi-Mo Yang,

Lianqing Li

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(14), С. 1904 - 1907

Опубликована: Янв. 1, 2024

The Fe( ii )-catalyzed cyclization of 2 H -azirines and N , -dimethylformamide as an amine source has been developed for the synthesis 1-methyl-4,5-diaryl-1 -imidazoles.

Язык: Английский

Процитировано

1

Five-membered ring systems: With more than 1 N atom DOI
Larry Yet

Progress in heterocyclic chemistry, Год журнала: 2024, Номер unknown, С. 211 - 257

Опубликована: Янв. 1, 2024

Язык: Английский

Процитировано

0