Aerobic Oxygenation of Olefinic Compounds into the Corresponding α-Hydroxy Ketones Using the Catalyst System of OsO<sub>4</sub>and Ni(II) Complex
作者:Toshihiro Takai、Tohru Yamada、Teruaki Mukaiyama
DOI:10.1246/cl.1991.1499
日期:1991.9
In the presence of the catalyst system of OsO4 and bis(3-methyl-2,4-pentanedionato)nickel(II), various olefinic compounds are directly converted into the corresponding α-hydroxy ketones in good yields with molecular oxygen and an aldehyde.
Mechanism of the Reaction of Olefins with Nitrous Anhydride (O═N–O–N═O) to Form 1,2-Oxazetes
作者:G. Sudhakar Reddy、E. J. Corey
DOI:10.1021/acs.orglett.2c04080
日期:2023.1.13
The mechanistic pathway for the formation of 1,2-oxazetes by reaction of olefins with nitrous anhydride has been clarified. The initial reaction intermediate, a β-nitroso nitrite ester that is sensitive to light, undergoes O–NO fission to form a β-nitroso alkoxy radical, even with ambient fluorescent lighting but much faster with blue light irradiation. The oxygen of the alkoxy radical subsequently