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• W2085201620 abstract "Br(CH2)4Br and NaO(CH2)2CHCH2 react under suitable conditions to give Br(CH2)4O(CH2)2CHCH2 (55%), which is treated with KPPh2 to yield the ether-containing phosphine Ph2P(CH2)4O(CH2)2CHCH2 (83%). The reaction of CH3CH2OC(O)CHC(CH3)2 and BrMg(CH2)3CHCH2 in the presence of CuCl (cat.) and ClSiMe3 yields CH3CH2OC(O)CH2C(CH3)2(CH2)3CHCH2 (67%), which is reduced to an alcohol that is brominated, reacted with Grubbs’ catalyst, hydrogenated, and treated with KPPh2 to give the bis(geminally dimethylated) diphosphine Ph2P(CH2)2C(CH3)2(CH2)8C(CH3)2(CH2)2PPh2 (47% overall). The photochemical reaction of I(CF2)8I and H2CCHCH2SnBu3 yields H2CCHCH2(CF2)8CH2CHCH2 (52%), which is converted with 9-BBN to a diol (92%) that is brominated and treated with LiPR2 to give the fluorinated diphosphines R2P(CH2)3(CF2)8(CH2)3PR2 (R = a, p-tol, 67%; b, t-Bu, 69%; c, o-tol, 86%). Reactions of Br(CH2)mBr and LiPR2 similarly yield R2P(CH2)mPR2 (m/R = 8/a, 95%; 14/a, 96%; 14/p-C6H4-t-Bu, 98%). Reactions of KPPh2 with Br(CH2)m′CHCH2and Br(CH2)7CH3 give the corresponding monophosphines Ph2P(CH2)m′CHCH2 (m′ = 7, 82%; 10, 84%) and Ph2P(CH2)7CH3 (85%). When the former is combined with [Pt(μ-Cl)(C6F5)(tht)]2 (tht = tetrahydrothiophene), trans-(C6F5)(Ph2P(CH2)m′CHCH2)2PtCl (77–70%) is isolated. When the latter (excess) is combined with trans,trans-(C6F5)(p-tol3P)2Pt(CC)4Pt(Pp-tol3)2(C6F5) (RT, 65 °C), trans,trans-(C6F5)(Ph2P(CH2)7CH3)2Pt(C C)4Pt(Ph2P(CH2)7CH3)2(C6F5) (53%) is isolated." @default.
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• W2085201620 date "2007-04-01" @default.
• W2085201620 modified "2023-10-09" @default.
• W2085201620 title "Monophosphine and diphosphine ligands for diplatinum polyynediyl complexes: Efficient syntheses of new functionality-containing systems and model compounds" @default.
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• W2085201620 doi "https://doi.org/10.1016/j.jorganchem.2006.12.023" @default.
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