𝔖 Bobbio Scriptorium
✦   LIBER   ✦

3,4-Dihydro-4-oxo-2H-1,3-benzoxazine-carboxylic acids

✍ Scribed by Fitton, A. O.; Ward, M. P.

Book ID
121735733
Publisher
The Royal Society of Chemistry
Year
1971
Tongue
English
Weight
475 KB
Category
Article
ISSN
0022-4952

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Recyclization of methyl-4-hydroxy-2-(o-h
Recyclization of methyl-4-hydroxy-2-(o-hydroxyphenylamino)-5-oxo-2,5-dihydropyrrole-2-carboxylate into the amide of (2-oxo-3,4-dihydro-2H-1,4-benzoxazin-3-ylidene)pyruvic acid
✍ A. N. Maslivets; L. I. Smirnova; Yu. S. Andreichikov πŸ“‚ Article πŸ“… 1991 πŸ› Springer US 🌐 English βš– 70 KB

XIII are separated into the individual isomers by PTLC [preparative thin-layer chromatography] on silica gel plates. The structures of the compounds prepared were shown by means of PMR and confirmed by mass spectra obtained in a Finnigan MAT90 instrument with ionizing electrons of 70-eV energy and a

Enantiomers of 2-methyl- and 2,4-dimethy
Enantiomers of 2-methyl- and 2,4-dimethyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid: Preparation by resolution, determination of absolute configuration, and Curtius rearrangement
✍ Alenka Rutar; UrΕ‘a Ε½bontar; Danijel Kikelj; Ivan Leban πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 260 KB πŸ‘ 1 views

Both enantiomers of 2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-2carboxylic acid 2 and 2,4-dimethyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid 3 were prepared via resolution of the corresponding racemic carboxylic acids with (R)-and (S)-1-phenylethylamine, respectively. Absolute config