A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 4355-11-7, Name is 1,1-Cyclohexanediaceticacid, molecular formula is C10H16O4. In an article, author is Kawamoto, Yuki,once mentioned of 4355-11-7, Quality Control of 1,1-Cyclohexanediaceticacid.
Synthesis of N-methylated unsymmetric porphyrinoids with restricted N-centered chirality from chlorophyll-a
Regioselectively N-methylated chlorophyll-a derivatives were prepared as their cationic and hydrophilic species. Both their epimerically pure samples at the chiral methylated nitrogen atom were obtained, and the stereochemistry was proposed by circular dichroism spectral analysis. This is the first example for restricted N-centered chirality in an unsymmetric chlorin core.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis