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. 1038-95-5, Name is Tri-p-tolylphosphine, molecular formula is C21H21P. In a Article£¬once mentioned of 1038-95-5, category: chiral-phosphine-ligands
Diastereoselective substitution of PR3 for Co in carbohydrato- and menthyloxycarbene complexes of manganese – Synthesis of chiral-at-metal carbene and carbyne complexes
The substitution of PR3 (R = C6H4CH3-p, C6H4Cl-p, C6H11, OCH3) for a CO ligand in chiral carbohydratocarbene complexes [(eta5-C5H5)(CO) 2Mn=C(OR*)Ph] [OR* = alpha- (1alpha) and beta-mannofuranosyl (1beta), (-)-menthyloxy (9)] proceeds diastereoselectively. The diastereoselectivity depends on PR3 and on the OR* substituent and ranges from 12% de (R = OCH3) to 80% (R = C6H4CH3-p). In contrast, the reaction of 1beta with P(OPh)3 is non-selective. The diastereoselectivity generally increases with increasing nucleophilicity of PR3 snd decreases in the series 1beta > 1alpha > 9. The highest diastereoselectivity was observed in the reaction of 1beta with P(C6H4CH3-p)3. Predominantly, the isomer with the (S) configuration at the metal [(SMn)-2beta] was formed which could be separated from the diastereomeric mixture by chromatography and be obtained in a pure form. Subsequent reaction of (SMn)-2beta with BF3 afforded the carbyne-manganese complex (SMn)-[(eta5-C5H5){P(C 6H4CH3-p)3}(CO)Mn?CPh]BF 4. VCH Verlagsgesellschaft mbH, 1996.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.category: chiral-phosphine-ligands. In my other articles, you can also check out more blogs about 1038-95-5
Reference£º
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