A new method for obtaining 2,6-dialkyl-1,4-benzoquinones by oxidation of 2,6-dimethyl and 2,6-ditertbutylphenols by molecular oxygen in a two-phase ''water-organic'' system and in the presence of P-Mo-V heteropoly acids has been proposed.
Catalytic oxidation of benzoin and p-substituted benzhydrol by p-benzoquinone or air in the presence of [FeII(SPh)4]2− and [FeII(SePh)4]2−
✍ Scribed by Wei-Yin Sun; Norikazu Ueyama; Akira Nakamura
- Publisher
- Elsevier Science
- Year
- 1992
- Weight
- 486 KB
- Volume
- 71
- Category
- Article
- ISSN
- 0304-5102
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📜 SIMILAR VOLUMES
Enantiomerically pure (S)S-(p-tolylsulfinyl)-l,4-benzoquinones with alkyl and methoxy substituents at C-2 and/or C-3 are synthesized by CAN oxidation of adequately substituted (S)S-(p-tolylsulfinyl)-l,4-dimethoxyaromatic precursors 2 or 3. These compounds were obtained by ortho-directed metallation
1997 sulfoxides, sulfones, sulfenes and derivatives sulfoxides, sulfones, sulfenes and derivatives (benzene compounds) Q 0600 31 -094 ortho-Directed Metallation in the Regiocontrolled Synthesis of Enantiopure 2-and/or 3-Substituted (S)S-(p-Tolylsulfinyl)-1,4-benzoquinones. -It is shown that the dim