A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, name: (1S,2R)-2-Amino-1,2-diphenylethanol, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 23364-44-5, Name is (1S,2R)-2-Amino-1,2-diphenylethanol, molecular formula is C14H15NO. In a Article, authors is Andres，once mentioned of 23364-44-5
The title compounds were prepared by condensation of isophthaldehyde with chiral amino alcohols or alpha-amino esters in three different ways depending on the substitution pattern. These methods are: for N-substituted amino alcohols, by reduction of the epimeric mixtures of 1,3-oxazolidines formed in the condensation process; for unsubstituted ones, by reduction of the corresponding hydroxy imines, followed by N-alkylation; and for the imines obtained in the condensation with amino esters, by sequential reduction and reaction with methylmagnesium iodide.
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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI