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. 1034-39-5, Name is Dibromotriphenylphosphorane, molecular formula is C18H15Br2P. In a Article£¬once mentioned of 1034-39-5, Formula: C18H15Br2P
Phosphinimine-borane combinations in frustrated Lewis pair chemistry
The phosphinimines Ph3PNR (R = Ph 1, C6F 52, tBu 3) are combined with B(C6F5) 3 in an effort to explore the frustrated Lewis pair (FLP) chemistry. While compound 1 is shown to form an adduct with the borane, compounds 2 and 3 exhibit no apparent interaction. Nonetheless exposure of each of the three combinations to H2 resulted in the formation of the corresponding salts [Ph3PN(H)R][HB(C6F5)3] (R = Ph 5, C6F56, tBu 7). Reaction of 1 or 2 with B(C 6F5)3 and carbon dioxide afforded Ph 3PN(R)COOB(C6F5)3 (R = Ph 8, C 6F59) while the corresponding reaction with 3 gave rise only to the tBuNCO and (Ph3PO)B(C6F5) 3. Reactions of 1-3 and B(C6F5)3 with PhC?CH proceeds to give either deprotonation or addition affording products of the form [Ph3PN(H)R][PhC?CB(C6F 5)3] or (Ph3PNR)(Ph)C=CH(B(C6F 5)3). The factors governing the nature of the dominant products are considered.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Formula: C18H15Br2P, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1034-39-5, in my other articles.
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