Ruthenium-phosphine complex and method for producing the same

摘要

Disclosed is a ruthenium-phosphine complex usable as the catalyst giving a high enantiomer excess in an asymmetric reaction and a method for producing the complex. The ruthenium-phosphine complex is represented by formula (1):wherein R2 represents hydrogen, alkyl, cycloalkyl or benzyl and L represents a diphosphine ligand represented by formula (2):wherein R1 represents an optionally substituted phenyl group and X represents a halogen atom. The method for preparing a ruthenium-phosphine complex represented by formula (1) is characterized in that a ruthenium complex represented by the formula [RuX(arene)(L)]X and an ammonium salt represented by the formula R22NH.HX are reacted with each other.