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. 57090-45-6, Name is (R)-(-)-3-Chloro-1,2-propanediol, molecular formula is C3H7ClO2. In an article, author is Jerome, Peter,once mentioned of 57090-45-6, Recommanded Product: (R)-(-)-3-Chloro-1,2-propanediol.
Chiral and achiral Pd(II)-NNN pincer complexes (1-3) containing acetonitrile as an ancillary ligand were synthesized and characterized by spectroscopic (UV-visible, FT-IR, NMR and mass) techniques. Polarimetric experiments were employed to measure the specific rotation values of the chiral complexes {[alpha](D)(27)= +135 degrees (2) and -136 degrees (3)}. The structures resolved through single crystal X-ray diffraction technique disclosed the distorted square planar geometry of the complexes. Transfer hydrogenation (TH) reactions of ketones were carried out in order to appraise the catalytic efficiency of the complexes. Remarkably, the TH results were promising for all the complexes, however, the chiral complexes (2 and 3) failed to induce chirality. Further probe led us to believe that the pincer complexes turned into Pd particles in situ and the later acted as an active catalyst. The scope of TH was extended to various substituted aromatic and heterocyclic ketones (Conversions=75-99%).
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Reference:
Chiral Catalysts,
,Chiral catalysts – SlideShare