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- W2980639776 endingPage "3773" @default.
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- W2980639776 abstract "The KOH-promoted chemodivergent benzannulation of ortho-fluorobenzamides with 2-propyn-1-ol can afford either 1,4-benzoxazepin-5(4H)-ones or 1,3-benzoxazin-4(4H)-ones in good yields with high selectivity, depending greatly upon the use of solvents. In the case of using DMSO, the intermolecular benzannulation produced seven-membered benzo-fused heterocycles of 1,4-benzoxazepin-5(4H)-ones, whereas in MeCN, the six-membered benzo-fused heterocycles of 1,3-benzoxazin-4(4H)-ones were formed. The KOH-promoted benzannulation proceeded most probably through the C–F nucleophilic substitution of ortho-fluorobenzamides with 2-propyn-1-ol to give the intermediate of ortho-[(2-propynyl)oxy]benzamide, which underwent the intramolecular hydroamidation in a different manner to afford either seven- or six-membered benzo-fused heterocycles." @default.
- W2980639776 created "2019-10-25" @default.
- W2980639776 creator A5020760956 @default.
- W2980639776 creator A5045683824 @default.
- W2980639776 creator A5065486126 @default.
- W2980639776 date "2019-10-19" @default.
- W2980639776 modified "2023-10-16" @default.
- W2980639776 title "Base-Promoted Chemodivergent Formation of 1,4-Benzoxazepin-5(4H)-ones and 1,3-Benzoxazin-4(4H)-ones Switched by Solvents" @default.
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- W2980639776 doi "https://doi.org/10.3390/molecules24203773" @default.
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