Monophosphine and diphosphine ligands for diplatinum polyynediyl complexes: Efficient syntheses of new functionality-containing systems and model compounds
作者:Laura de Quadras、Jürgen Stahl、Fedor Zhuravlev、John A. Gladysz
DOI:10.1016/j.jorganchem.2006.12.023
日期:2007.4
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)
Br(CH 2)4 Br和NaO(CH 2)2 CHCH 2在合适的条件下反应,生成Br(CH 2)4 O(CH 2)2 CHCH 2(55%),将其用KPPh 2处理后得到含醚的膦Ph 2 P(CH 2)4 O(CH 2)2 CHCH 2(83%)。CH 3 CH 2 OC(O)CHC(CH 3)2与BrMg(CH 2)3的反应在CuCl(cat。)和ClSiMe 3存在下的CHCH 2生成CH 3 CH 2 OC(O)CH 2 C(CH 3)2(CH 2)3 CHCH 2(67%),将其还原为醇将其溴化,与Grubbs的催化剂反应,氢化,并用KPPh 2处理,得到双(双甲基化)二膦Ph 2 P(CH 2)2 C(CH 3)2(CH 2)8 C(CH 3)2(通道2)2 PPh 2(整体47%)。I(CF 2)8 I和H 2 CCHCH 2 SnBu 3的光化学反应产生H 2 CCHCH