Secondary diphosphine and diphosphido ligands: synthesis, characterisation and group 1 coordination compounds
作者:Jamie S. Ritch、Delphine Julienne、Shayne R. Rybchinski、Kathryne S. Brockman、Kevin R. D. Johnson、Paul G. Hayes
DOI:10.1039/c3dt51844b
日期:——
diastereomer of 3 and 4 was observed; X-ray crystallographic studies identified this as the rac isomer for diselenide 4. Metallation studies of compounds 1a and 2 yielded several alkali metal salts. The reaction of KH or K metal with 1a yielded the compounds 1,8-(TrippPK)2C14H8·xTHF (5) and 1,8-(TrippPK)2C14H10·xTHF (6), respectively; in complex 6 the central aromatic ring has been reduced to yield a bent
两种类型的仲二膦1,8-(ArPH)2 C 14 H 8(1a:Ar = Tripp,2,4,6-三异丙基苯基; 1b:Ar = Mes,2,4,6-三甲基苯基)和1, 3-(t BuPHCH 2)2 C 6 H 4(2)分别基于刚性的1,8-蒽和柔性的m-二甲苯基骨架,已使用不同的策略进行了合成。化合物1a和1b是通过将有机磷化钾盐亲核芳香取代成1,8-二氟蒽而形成的,而化合物2通过将格氏试剂[1,3-(ClMgCH 2)2 C 6 H 4 ] x加到二氯有机膦中,然后还原成二膦而获得产物。这些化合物分离为CA。通过多核NMR光谱法确定的rac和内消旋非对映异构体的1:1混合物。的硼烷和硒化物的衍生物2,1,3-(吨BUPH(BH 3)CH 2)2 C ^ 6 ħ 4(3)和1,3-(吨BUPH(Se)的CH 2)2获得C 6 H 4(4)。观察到3和4的一种非对映异构体的优先结晶。X射