Formation of ArPdXL(amine) complexes by substitution of one phosphane ligand by an amine in trans-ArPdX(PPh3)2 complexes
Formation of ArPdXL(amine) complexes by substitution of one phosphane ligand by an amine in trans-ArPdX(PPh3)2 complexes
复制标题
通过反式 ArPdX(PPh3)2 配合物中的一个膦配体被胺取代形成 ArPdXL(胺) 配合物
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Anna Principaud
中科院分区：
文献类型：
--
作者：
A. Jutand*;Serge Négri;Anna Principaud
胺（哌啶，吗啉，二异丙胺，叔丁胺），其可用作无铜钯催化的Sonogashira反应中的碱，在trans-ArPdX（PPh 3）2络合物中取代一个膦PPh 3（Ar = Ph，4-NC-C6 H 4，4-MeOC-C6 H 4，2-噻吩基; X = I，Br，Cl）在可逆反应中生成ArPdX（PPh 3）（胺）络合物，其平衡常数在氯仿，THF和DMF中测定。平衡常数取决于Ar、X、碱性和胺的空间位阻。（© Wiley-VCH Verlag GmbH & Co. KGaA，69451魏因海姆，德国，2005）
Amines (piperidine, morpholine, diisopropylamine, terbutylamine), which may be used as bases in copper-free palladium-catalyzed Sonogashira reactions, substitute one phosphane PPh3 in trans-ArPdX(PPh3)2 complexes (Ar = Ph, 4-NC–C6H4, 4-MeOC–C6H4, 2-thienyl; X = I, Br, Cl) to generate ArPdX(PPh3)(amine) complexes in a reversible reaction whose equilibrium constant is determined in chloroform, THF, and DMF. The equilibrium constant depends on Ar, X, the basicity, and the steric hindrance of the amine. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)