304657-12-3Relevant academic research and scientific papers
Base-Promoted Chemodivergent Formation of 1,4-Benzoxazepin-5(4H)-ones and 1,3-Benzoxazin-4(4H)-ones Switched by Solvents
Chen, Qian,Wang, Yunpeng,Hua, Ruimao
, (2019)
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
Preparation method of benzoxazaseven-membered ring
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Paragraph 0036; 0037, (2019/07/04)
The invention discloses a preparation method of a benzoxaza seven-membered ring.The preparation method comprises the following steps of: in the presence of alkali, an o-fluorobenzamide compound shownin a formula II is reacted with a propynol compound show
