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. 161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), molecular formula is C39H32OP2. In a Patent，once mentioned of 161265-03-8, COA of Formula: C39H32OP2
The invention relates to a kind of the following formula (IV) shown diphenyl phosphoric acid ester compound synthesis method, The method includes: in the organic solvent, the catalyst, oxidizing agent, and an activating agent in the presence of alkali, the following formula (I) compound, (II) and (III) compound compound in the 70 – 90 C lower reaction 8 – 12 hours, after the reaction is finished after treatment, thereby obtaining states the type (IV) compound, Wherein R1 Is selected from H, C1 – C6 Alkyl, C1 – C6 Alkoxy or halogen; R2 C selected from1 – C6 Alkyl, most preferably methyl; X is bromo. The method through the suitable reaction substrate, catalyst, oxidizing agent, alkali and organic solvent of the activator and the comprehensive selective coordination with the, thus can yield to obtain the target product, thus in the technical field of pharmaceutical intermediate synthesis has good application prospect and wide industrialized production potential. (by machine translation)
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.COA of Formula: C39H32OP2, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 161265-03-8, in my other articles.
Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate