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, Formula: C39H32OP2
The invention relates to a synthetic beta – – gamma – butyrolactone ester method, which belongs to the technical field of chemical engineering, the method is used for the copper – phosphine complex catalyst catalytic alkyl zinc, maleic acid diester, aldehyde or ketone reaction to synthesize beta – ester – gamma – butyrolactone; the copper – phosphine complex catalyst is composed of a copper salt with the organic phosphine ligand in the reaction system formed or pre-preparation of the copper – phosphine complex; the method specifically is: alkyl zinc is added to the aldehyde or ketone, maleic acid diester, copper – phosphine complex catalyst in the mixed systems of; or the aldehyde or ketone, maleic acid diester is added to the alkyl zinc and copper – phosphine complex catalyst in the mixed systems of, in organic solvent for – 30 – 50 C stirring reaction 0.25 – 10h. This invention adopts the Cu complex organic phosphine ligand as catalyst for reaction, selectively generating alpha – C not beta – ester with substituent – gamma – butyrolactone, wide application range, the catalyst is cheap and, mild reaction conditions can be at room temperature or near room temperature and, after treatment is simple, and is favorable for industrial production. (by machine translation)
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Formula: C39H32OP2. In my other articles, you can also check out more blogs about 161265-03-8
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