Functionalised Tris(pyrazolyl)methane Ligands and Re(CO)<sub>3</sub>Complexes Thereof
作者:Peter C. Kunz、Michael Berghahn、Nadine E. Brückmann、Marcus Dickmeis、Markus Kettel、Bernhard Spingler
DOI:10.1002/zaac.200801298
日期:2009.3
these ligands and [Re(CO)5Br] yields the complex [(1a)Re(CO)3]Br (4) in the case of ligand 1a, whereas in the case of the substituted ligands 1b and 1c degradation was observed. The degradation products are identified as [(HpzR)2Re(CO)3Br] [R = tBu (7b), Ph (7c)]. These complexes were also prepared directly from [Re(CO)5Br] and the corresponding pyrazoles by microwave-assisted synthesis. The Re(CO)3 complexes
描述了从三(吡唑基)甲烷(TpmR,R = H,tBu,Ph in 3-position)衍生的新三足氮配体的合成。在母体三(吡唑基)甲烷 TpmR 去质子化后,碳负离子很容易与环氧乙烷反应生成 3,3,3-三(3'-取代的吡唑基)丙醇配体[(3-Rpz)3CCH2CH2OH, R = H, tBu,Ph,1a–c]。这些配体可以很容易地在醇官能团上衍生化。这些配体和 [Re(CO)5Br] 的微波辅助反应在配体 1a 的情况下产生复合物 [(1a)Re(CO)3]Br (4),而在取代配体 1b 和 1c 的情况下观察到降解。降解产物被确定为 [(HpzR)2Re(CO)3Br] [R = tBu (7b), Ph (7c)]。这些配合物也直接由 [Re(CO)5Br] 和相应的吡唑通过微波辅助合成制备。Re(CO)3 配合物 4 和 [(1a)Re(CO)3]OTf (5) 是水溶性的