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A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Quality Control of N-Methylpropane-1,3-diamine, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 6291-84-5, Name is N-Methylpropane-1,3-diamine, molecular formula is C4H12N2. In an article, author is Scalambra, Franco,once mentioned of 6291-84-5.

Steps Ahead in Understanding the Catalytic Isomerization Mechanism of Linear Allylic Alcohols in Water: Dynamics, Bonding Analysis, and Crystal Structure of an eta(2)-Allyl-Intermediate

The isomerization of 1-penten-3-ol into 3-pentanone catalyzed by [RuCp(H2O-kappa O)(PTA)2](CF3SO3) (1CF3SO3) (PTA = 1,3,5-triaza-7-phosphaadamantane) was studied and two water-soluble ruthenium catalyst reaction intermediates were characterized. The main intermediate, the complex [RuCp(exo-eta(2)-1-penten-3-ol)(PTA)(2)](CF3SO3).2H(2)O (exo-2CF(3)SO(3).2H(2)O), was isolated and characterized by NMR in solution and by single-crystal X-ray diffraction in the solid state, constituting the first example of a fully characterized complex containing a coordinated eta(2)-allylic alcohol and the first crystal structure for a water-soluble metal complex containing a eta(2)-allyl ligand. NMR and Eyring analysis show the crucial involvement of water molecules both in the transformation of allylic alcohol into a ketone as well as in the concomitant isomerization of the exo-coordinated substrate into the endo-conformer. DFT structure and bonding analyses are used to assess the relative stabilities of the isomers and how the metal drives the electronic distribution on the substrate.

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Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI