Awesome and Easy Science Experiments about 1038-95-5

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Reference of 1038-95-5, An article , which mentions 1038-95-5, molecular formula is C21H21P. The compound – Tri-p-tolylphosphine played an important role in people’s production and life.

The complexes [Pd(C6H4X-2)BrL2] (L2 = trans-(PR3)2, R = Ph, X = CH=CH2 (1a), CHO (1b), C(O)Me (1c), CN (1d); R = p-To = 4-tolyl, X = CH=CH2 (1a?); L2 = bpy = 2,2?-bipyridine, X = CHO (2b), C(O)Me (2c), CN (2d); L2 = tmeda = N,N,N?,N?-tetramethylethylenediamine, X = CHO (2b?), CN (2d?)) have been prepared by oxidative addition of the corresponding bromoarene BrC6H4X-2 to “Pd(dba)2” (=[Pd2(dba)3]·dba, dba = dibenzylideneacetone) in the presence of the appropriate ligand. The compound [Pd{C6H4(CH=CH2)-2}(bpy)(PPh3)]TfO (3a; TfO = CF3SO3) has been obtained by reacting 1a with bpy in the presence of TlOTf. The cyclopalladated [Pd{kappa2-C,O-C6H4{C(O)Me}-2}(bpy)]TfO (4c) has been prepared from 2c and TlOTf. The dimeric complexes [Pd(mu-Br)(C6H4X-2)(PR3)]2 (R = Ph, X = CHO (5b), C(O)-Me (5c), CN (5d); R = o-To = 2-tolyl, X = CHO (5b?), CN (5d?)) have been synthesized by reacting complexes 1b-d with [PdCl2(NCPh)2] in a 2:1 molar ratio or C6H4Br-1-X-2 with “Pd(dba)2” and P(o-To)3 in 1:1:1 molar ratio. The latter method leads to the monomeric [Pd{kappa2-C,O-C6H 4{C(O)Me}-2})Br{P(o-To)3}] (6c?) when X = C(O)Me. The complex 2c reacts with the alkyne PhC?CPh or EtC?CEt and TlOTf to give 1-methyl-2,3-diphenyl-1H-indenol (7) or 1-methyl-2,3-diethyl-1H-indenol (8), respectively. The crystal structures of complexes 1a·2CH2Cl2, 1b·CH2Cl2, 2b,d, and 6c? have been determined by X-ray diffraction studies. An interesting supramolecular layered structure is formed through CN. . .H-Cbpy and Br. . .H-Cbpy hydrogen bonds in complex 2d.

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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