[EN] COMPLEXES OF RUTHENIUM WITH 2-(AMINOMETHYL)PYRIDINES AND PHOSPHINES, THEIR PREPARATION AND USE AS CATALYSTS<br/>[FR] COMPLEXES DE RUTHENIUM CONTENANT DES 2-(AMINOMETHYL)PYRIDINES ET DES PHOSPHINES, LEUR PREPARATION ET LEUR UTILISATION COMME CATALYSEURS
申请人:UNIV DEGLI STUDI UDINE
公开号:WO2005105819A1
公开(公告)日:2005-11-10
The patent describes a new class of ruthenium (II) complexes containing as ligands 2-(aminomethyl)pyridines and phosphines, proven to be extremely active catalysts in the reduction of ketones to alcohols via hydrogen transfer. By using 2-propanol as the hydrogen source with said ruthenium complexes, high yields of the corresponding alcohol can be rapidly obtained starting from linear and cyclic alkyl aryl, dialkyl and diaryl ketones. The conversion of ketones to alcohols can reach 100% if operating in a gaseous hydrogen atmosphere (2 - 3 atm). Where the phosphines used are optically active, starting from prochiral ketone compounds various types of optically active alcohols can be produced, being important intermediates in the pharmaceutical industry, in the agrochemical industry and for fine chemicals generally.
该专利描述了一种新的钌(II)配合物类,其含有2-(氨甲基)吡啶和膦作为配体,已被证明是在氢转移还原酮为醇反应中极为活性的催化剂。通过使用2-丙醇作为氢源与该钌配合物,可以从线性和环烷基芳基、双烷基和双芳基酮中快速得到相应的醇高收率。如果在氢气气氛下(2-3大气压)操作,酮到醇的转化率可以达到100%。如果使用的膦是光学活性的,则可以从原始手性酮化合物中生产各种类型的光学活性醇,这些醇是制药工业、农化工业和精细化学品通常的重要中间体。