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Oxidation of Cyclopropylidenes with Ozone and (Singlet) Oxygen

✍ Scribed by A. Hofland; Th. J. De Boer; H. Steinberg


Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
46 KB
Volume
91
Category
Article
ISSN
0037-9646

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πŸ“œ SIMILAR VOLUMES


Regiospecific singlet oxygen oxidation o
✍ D. De Keukeleire; E. Siaens; M. Verzele πŸ“‚ Article πŸ“… 2010 πŸ› Wiley (John Wiley & Sons) βš– 453 KB

## Abstract Hexahydrocolupulone (4) and (‐)R‐tetrahydrohumulone (5) are regiospecifically oxidized by singlet oxygen at ring carbon atom 4. The reaction proceeds by addition of singlet oxygen to the Ξ΄4‐5 enolic function with formation of a perepoxide intermediate. Rearrangement affords the 4‐hydrop

Oxidation of Cyclopropyl Hydrocarbons wi
✍ Dipl.-Chem. Ehrhardt Proksch; Prof. Dr. Armin de Meijere πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 English βš– 220 KB

main product. \r.hich undergoes stereoselective Diels-Alder addition with 1 ,3-dienesll1. Elucidation of the mechanism of this reaction required X-ray determination of the configuration and conformation of ( I ).

Ene-Reactions with Singlet Oxygen
✍ Axel G. Griesbeck; Tamer T. El-Idreesy; Waldemar Adam; Oliver Krebs πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons βš– 50 KB
Oxidation of Alkylidenetriphenylphosphor
✍ Prof. Dr. Hans JΓΌrgen Bestmann; Dipl.-Chem. Lothar Kisielowski; Dr. Werner Distl πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 English βš– 213 KB

is removed with trifluoroacetic acid (TFA/CH2C12, 1 : 1 ; yield 5.9 g = 70 % as TFA derivative). In analogy to the above two peptide linkages the protected pentapeptide Boc-L-Tyr(Bz1)-Gly-Gly-L-Phe-L-Met-OMe (1.2 g, 77 % yield) was obtained from Boc-L-Tyr(Bz1)-Gly-Gly-O H (1 g, 2 mmol) and H -L -P

Oxidation Reactions of Benzvalene: Ozono
✍ Dipl.-Chem. Hartmut Leininger; Prof. Dr. Manfred Christl πŸ“‚ Article πŸ“… 1980 πŸ› John Wiley and Sons 🌐 English βš– 252 KB

chain reaction already accepted in the case of other bicy-cl~[l.l.O]butanes[~~. Why does the phenylthio radical attack benzvalene (1) at the double bond but homobenzvalene (8) at the bicy-clot1 .I .O]butane system? Since thio radicals have electrophilic characterf7I, the interaction with the HOMO o