In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 70665-05-3, name is (S)-2-Phenylpiperidine, introducing its new discovery. Formula: C11H15N
Access to enantiomerically pure chiral mono- and disubstituted piperidines and pyrrolidines has been achieved using a biocatalytic cascade involving carboxylic acid reductase (CAR), omega-transaminase (omega-TA), and imine reductase (IRED) enzymes. Starting from keto acids or keto aldehydes, substituted piperidine or pyrrolidine frameworks can be generated in high conversion, ee, and de in one pot, with each biocatalyst exhibiting chemo-, regio-, and/or stereoselectivity during catalysis. The study also includes a systematic investigation of the effect of the position of a methyl group ring substituent on the IRED-catalyzed reduction of a chiral imine. Analysis of the selectivity observed in these reactions revealed an interesting balance between substrate versus enzyme control; the configurations of the products obtained were rationalized on the basis of minimizing 1,3- or 1,2-steric interactions with incoming NADPH.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 70665-05-3 is helpful to your research. Formula: C11H15N
Reference：
Piperidine – Wikipedia,
Piperidine | C5H9361N – PubChem