205497-64-9 Usage
General Description
2,2'-(Di-o-tolylphosphino)diphenylether, commonly known as DTP-DPEphos, is a chemical compound with a minimum purity of 97%. It is a type of phosphine ligand used in various catalytic reactions, particularly in organic synthesis and metal-catalyzed transformations. DTP-DPEphos is known for its high stability and efficiency, making it a popular choice for chemists and researchers in the field of chemical synthesis. 2,2'-(Di-o-tolylphosphino)diphenylether, Min. 97% DTP-DPEphos is often used in combination with transition metals such as palladium and rhodium to facilitate a wide range of transformations, including C-C and C-N bond formations, cross-coupling reactions, and asymmetric hydrogenation. Its high purity and consistent performance make DTP-DPEphos a valuable tool in the development of new chemical processes and the production of pharmaceuticals, agrochemicals, and advanced materials.
Check Digit Verification of cas no
The CAS Registry Mumber 205497-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,4,9 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 205497-64:
(8*2)+(7*0)+(6*5)+(5*4)+(4*9)+(3*7)+(2*6)+(1*4)=139
139 % 10 = 9
So 205497-64-9 is a valid CAS Registry Number.
205497-64-9Relevant articles and documents
Systematic variation of bidentate ligands used in aryl halide amination. Unexpected effects of steric, electronic, and geometric perturbations
Hamann, Blake C.,Hartwig, John F.
, p. 3694 - 3703 (2007/10/03)
This paper presents effects of varying bidentate phosphine steric properties, electronic properties, and bite angle on product ratios in the amination of aryl bromides. Comparison of the ratios of amine products to dehydrohalogenation products showed that catalysts containing electron rich, modestly hindered phosphines with small bite angles (~-90°) gave the best selectivities. Surprisingly, the arene side product formed from reaction of alkylamines deuterated in the N-H position or deuterated in the position α to the nitrogen showed low levels of deuterium incorporation in many examples. Steric properties and ligand bite angle had the greatest impact on the selectivity for monoarylation versus diarylation of primary amines; ligands with small bite angles gave higher monoarylation-to-diarylation ratios, as did ligands with increased steric bulk. Electron poor or sterically hindered bidentate phosphines reduced the amount of product resulting from aryl exchange of electron rich palladium-bound arenes with those of aryl groups on the phosphine ligands.
