The title compound, C 13 H 15 ClN 2 O 3 , adopts a keto-hydrazo tautomeric form stabilized by an intramolecular N-HÁ Á ÁO hydrogen bond. The configuration around the N-N bond is trans. The dihedral angle between the aromatic ring and the plane of the aliphatic chain is 3.18 (4) .
Structure of ethyl 3-(4-tolyl)hydrazono-2,4-dioxopentanoates
✍ Scribed by Levenets, T. V.; Kozâminykh, V. O.; Tolstikova, A. O.
- Book ID
- 120086150
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2013
- Tongue
- English
- Weight
- 143 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0022-4766
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## Abstract Methylation of ethyl 2, 4‐dioxopentanoate with diazomethane gives a mixture of two enol ethers, the 2‐methoxy and the 4‐methoxy isomer, with a product ratio which depends upon reaction temperature. Both enol ethers, initially (__Z__)‐configurated, isomerize to the corresponding (__E__)‐