Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬ HPLC of Formula: CF3NaO3S, Which mentioned a new discovery about 2926-30-9
Hemilabile phosphines by methyl acrylate insertion into the P-H bonds of palladium(I)-coordinated secondary phosphines. Labile anion (X = OTf) vs PO-chelate coordination (X = BF4) in Pd2(mu-PR2)(PR2R?)2(X) (R = But, R? = CH2CH2COOMe; X = OTf, BF4)
Methyl acrylate reacts with [Pd2(mu-PR2)(mu-PR2H)(PR2H) 2]X (R = But; 1a, X = CF3SO3; 1b, X = BF4) to give, after CC insertion into the PH bonds of di-tert-butylphosphine, [Pd2(mu-PR2)(mu,eta2-O 2SOCF3)(eta1-PR2R?) 2] (5a) or [Pd2(mu-PR2)(eta2-PR 2R?)2] BF4 (5b) (R? = CH2CH2COOMe). The reaction of la with methyl methacrylate proceeds analogously, forming [Pd2(mu-PR2)(eta2-PR 2R?)2]CF3SO3 (6) (R? = CH2CH(CH3)COOMe) as a mixture of diasfereoisomers. The unsaturated [Pd2(mu-P)(P)2] core is stabilized by the coordination of the triflate anion (5a) or of the carbonyl groups of the functional phosphines (5b and 6). The weak Pd-O interactions in 5a and 5b are easily displaced by CO or p-tolylisonitrile, yielding [Pd2(muPBu2t)(L)2{eta 1-PBu2t(CH2CH 2COOMe)}2]X (7a,b, L = CO; 8, L = CN-C6H4-p-Me, X = CF3SO3). The reaction of 5a with an excess of p-tolylisonitrile gives the new triangulo cluster Pd3(mu-PBu2t)2(CN-C 6H4-p-Me)5](CF3SO3) 2, (9). The X-ray crystal and molecular structures of 5a and 9 are also reported.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, HPLC of Formula: CF3NaO3S, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 2926-30-9
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI