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Opening of the benzoxazine ring in 2-substituted 4, 4-diethyl-4h-1, 3-benzoxazines

✍ Scribed by K. I. Lopatina; S. M. Klyuev; V. A. Zagorevskii

Book ID
112328813
Publisher
Springer US
Year
1970
Tongue
English
Weight
60 KB
Volume
6
Category
Article
ISSN
0009-3122

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Ring Opening of 2-(Benzylamino)-2H-1,4-b
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✍ Janez IlaΕ‘; Danijel Kikelj πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 German βš– 223 KB πŸ‘ 1 views

## Abstract Substituted 2‐(benzylamino)‐2__H__‐1,4‐benzoxazin‐3(4__H__)‐ones are unstable under alkaline and acidic conditions, undergoing opening of the benzoxazinone ring. 2‐Bromo‐2__H__‐1,4‐benzoxazin‐3(4__H__)‐ones show similar degradation under alkaline conditions, while replacement of Br at C

Synthesis of 3-substituted-4H-1,4-benzox
Synthesis of 3-substituted-4H-1,4-benzoxazines
✍ L. Chacun-Lefevre; C. Buon; P. Bouyssou; G. Coudert πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 French βš– 98 KB

Various 3-substituted-4H-1,4-benzoxazines were prepared in good yields by lithiation-electrophilic substitution of the 4-Boc-4H-l,4-benzoxazine. The synthesis of this carbamic derivative, in four steps from 2aminophenol, was described.