Reference of 19771-63-2, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 19771-63-2, molcular formula is C4H5NO3S, introducing its new discovery.
INTERMEDIATE FOR BIOTIN AND PROCESS FOR PRODUCING THE SAME
The present invention is to provide a process for preparing a synthetic intermediate of biotin which is industrially advantageous, and discloses a process for preparing a compound represented by the formula (I) :???wherein R1 and R2 may be the same or different from each other, and each represents hydrogen atom, a benzyl group which may have a substituent(s) on the benzene ring, a benzhydryl group which may have a substituent(s) on the benzen ring, or a trityl group which may have a substituent(s) on the benzene ring, R3 represents cyano group, carboxyl group, an alkoxycarbonyl group, an alkylthiocarbonyl group, or a carbamoyl group which may have a substituent, or a salt thereof which comprises subjecting a compound represented by the formula (II-a) :???wherein the symbols have the same meanings as defined above, or a salt thereof to ring transformation.
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 19771-63-2 is helpful to your research. Reference of 19771-63-2
Reference£º
Quinuclidine – Wikipedia,
Quinuclidine | C7H646N | ChemSpider