𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The correct stereochemistry of dimethyl 2,6-diphenyl-4-oxo-cyclohexane-1,1-dicarboxylate

✍ Scribed by Alex T. Rowland; Mark D. Winemiller; Michal Sabat

Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
99 KB
Volume
38
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

Conflicting literature reports dealing with the stereochemistry of the cyclohexanone formed from the Michael reaction of dibenzalacetono with dimethyl malonate have been resolved by X-ray structure analysis. The compound is the trans isomer with a twist conformation.

πŸ“œ SIMILAR VOLUMES

1H NMR spectra and stereochemistry of ci
1H NMR spectra and stereochemistry of cis- and trans-5,6-dimethyl-2-oxo-1,4-dioxans
✍ Pertti Γ„yrΓ€s πŸ“‚ Article πŸ“… 1975 πŸ› John Wiley and Sons 🌐 English βš– 203 KB

## Abstract The ^1^H NMR spectra of isomeric 5,6‐dimethyl‐2‐oxo‐1,4‐dioxans have been recorded and the pertinent chemical shifts and coupling constants determined. The parameters indicate that both isomers exist as an equilibrium mixture of interconverting half chair ring conformations.

Confirmation of the tricyclo[6,2,0,03,6]
Confirmation of the tricyclo[6,2,0,03,6]-decane structure for the photodimer of dimethyl 3-oxo-1,4-pentadiene-1,5-dicarboxylate
✍ Joseph Corse; Bernard J. Finkle; Robert E. Lundin πŸ“‚ Article πŸ“… 1961 πŸ› Elsevier Science 🌐 French βš– 192 KB

APPARENTLY the only suggested tricyclo~,2,0,03~~-decane derivative in the literature is tetrau&hyltricyclo~,2,0,03~~-2J7-dioxodecane-4J5J9J lo-tetracarboxylate (I). Stobbe and Fkkber' proposed the tricyclic-

A new ring transformation: Synthesis of
A new ring transformation: Synthesis of 5,5-dimethyl-3-oxo-1-pyrroline 1-oxides from 6,6-dimethyl-4-oxo-5,6-dihydro-1,2,4h-oxazines
✍ Christian Deshayes; Suzanne Gelin πŸ“‚ Article πŸ“… 1981 πŸ› Elsevier Science 🌐 French βš– 358 KB

The nitrosation of some y,&unsaturated B-diketo compounds affords the 3-substituted 4-oxo-5,6-dihydro-1,2,4ff-oxaxines. These compounds are converted to the isomeric 3-oxo-1-pyrroline l-oxides by a facile thermal rearrangement. In connection with our study of y,s-unsaturated 6-ketoesters1'2, we have