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, 157634-02-1, name is tert-Butyl 2-formylpiperidine-1-carboxylate, introducing its new discovery. Product Details of 157634-02-1
Enantioselective total syntheses of aloperine (1), N-methylaloperine (2), and N-allylaloperine (3) are reported. The central element of the synthetic strategy is an intramolecular Diels-Alder reaction in which the cycloaddends are tethered by a N-silylamine linkage. The total synthesis of 1 proceeds from commercially available 3-hydroxypiperidine hydrochloride (54) and (R)-pipecolinic acid (35) by way of nine isolated and purified intermediates. The synthesis is sufficiently efficient that gram quantities of (+)-aloperine (1) can be readily prepared. Early exploratory studies also introduced a convenient method for tethering cycloaddition partners with a sulfonamide unit to realize the intramolecular Diels-Alder cycloaddition of a vinylsulfonamide: 45 ? 46.
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 157634-02-1 is helpful to your research. Product Details of 157634-02-1
Reference：
Piperidine – Wikipedia,
Piperidine | C5H15956N – PubChem