Designing effective homogeneous catalysis for glycerol valorisation: selective synthesis of a value-added aldehyde from 1,3-propanediol via hydrogen transfer catalysed by a highly recyclable, fluorinated Cp*Ir(NHC) catalyst was written by Ma, Yueyuan;Wang, Yue-Ming;Morgan, Patrick J.;Jackson, Rachael E.;Liu, Xiao-han;Saunders, Graham C.;Lorenzini, Fabio;Marr, Andrew C.. And the article was included in Catalysis Today in 2018.Quality Control of 2-(Bromomethyl)-1,3-dimethylbenzene This article mentions the following:
Hydrogen transfer initiated dehydration (HTID) of 1,3-propanediol (1,3-PDO), in ionic liquids, catalyzed by a fluorinated Cp*IrCl2(NHC) (Cp* = pentamethylcyclopentadienyl; NHC = carbene ligand) complex, allows selective production of propionaldehyde in high yields, under air. Isolation of the product is facilitated by the use of an ionic liquid as the solvent, enabling the reaction to be performed under reduced pressure. The Ir(III) catalyst in ionic liquid was proven to be highly recyclable. Removal of H and F atoms bound to the ortho-C atoms of the benzyl arm of the carbene ligand inhibits the catalytic activity of complexes CpIrCl2(NHC), suggesting a crucial role played by the ortho-C-X grouping in HTID. The reaction of 1,3-PDO solutions in ionic liquids mimics that of the product of extraction of aqueous glycerol fermentation broths: the successful synthesis and isolation of a value-added chem. proves that valorization of glycerol waste can be achieved. The combination of Cp*IrX2(NHC) – catalyzed HTID of 1,3-PDO in ionic liquids with bio-catalysis has then, ultimately, the potential to allow the transformation of waste glycerol into valuable chems. that can be simply isolated. In the experiment, the researchers used many compounds, for example, 2-(Bromomethyl)-1,3-dimethylbenzene (cas: 83902-02-7Quality Control of 2-(Bromomethyl)-1,3-dimethylbenzene).
2-(Bromomethyl)-1,3-dimethylbenzene (cas: 83902-02-7) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Quality Control of 2-(Bromomethyl)-1,3-dimethylbenzene
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary