## Abstract Chemical polarization of protons was observed in methyl benzoate formed during the thermal decomposition of dimethyl ester of peroxydiphthalic acid. The polarization pattern of methyl benzoate aromatic protons was very different in this case from that observed during the thermal decompo
Chemical polarization of nuclei. Proton polarization during thermal decomposition reaction of dimethyl perdiglutarate
β Scribed by A. V. Ignatenko; A. V. Kessenikh
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 128 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
β¦ Synopsis
Proton chemical polarization was observed in methyl butyrate, y-butyrolactone and in some other products of the dimethyl perdiglutarate decomposition reaction. The polarization pattern of the a-CH, and P-CH, groups in butyrolactone is just as one would expect in the products of the CH,OCH,CH,CH, radical which has left the pair of identical radicals. Thus butyrolactone is formed from the CH30CH,CH,CH, radical by means of intramolecular cyclization and elimination of the methyl radical.
π SIMILAR VOLUMES
## Carbon-13 NNR spectra of chemically polarized decomposition pro&&s %%X6? in~est~g~~~d. The pofarization is much larger than in proton spectra, positive for radical recombination pro&cts and negative Ear thr? others. The chemical polarization appears ;IC the very moment of Formation of the stabl
## Abstract Thermolysis of diβ(4βchlorobenzoyl)βperoxide was carried out in the probe of an NMR. spectrometer. The dependence of product distribution and chemically induced dynamic nuclear polarization (CIDNP.) patterns on the concentrations of radical trapping agents gives evidence that the CIDNP.
## Abstract Vinylalcohol, formed by disproportionation of Ξ±βhydroxyethyl radicals, is detected by NMR. spectroscopy during photoreactions of acetaldehyde and acetoin in solution and slowly tautomerizes to acetaldehyde.