Oxidation of Terminal Olefins by Dioxygen in the Presence of PdII(NH3)x-CuII-LiI-Cl− or PdII (or Pd0)/Zeolites/CuII-LiI-Cl− Systems and a Coreducer (Ethanol)
✍ Scribed by Ourida Mohammedi; Farid Chemat; Jean-Marie Brégeault
- Book ID
- 101276307
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 288 KB
- Volume
- 1998
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
Simple ammonia complexes {cis-[PdCl 2 (NH 3 ) 2 ], [Pd(NH 3 ) 4 ]-cooxidation products. Chorohydridopalladium species are key intermediates in the isomerization of 1-alkenes; it Cl 2 or [Pd(NO 2 ) 2 (NH 3 ) 2 ]} with copper(II) chloride and LiCl or Pd II (or Pd 0 ) inserted into zeolite (faujasite Y or mordenite appears that the introduction of NH 3 , NO 2 -or zeolite ligands reduces the extent of isomerization and subsequently the Z)/Cu II /Li I /Cl -precursors in anhydrous ethanol catalyse the oxidation of terminal olefins to methyl ketones by dioxygen.
formation of isomeric ketones (octan-3-one and octan-4-one).
Although homogeneous catalysis cannot be ruled out, the One oxygen atom is incorporated into the olefinic substrate, while the other is involved in a cooxidation process of the improved selectivities and variations of selectivity and conversion with different zeolites suggest that a "ship-in-a-solvent leading to the formation of water. With 1-octene and ethanol, octan-2-one can be obtained selectively (up to 99 bottle" catalysis may be important. %), acetaldehyde and diethyl acetal being the main
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