Ligand, metal complex containing ligand, and reaction using metal complex containing ligand

摘要

A hydrogen transfer reaction may be more efficiently promoted by using a metal complex represented by Formula (2):; (wherein, R¹ to R⁸ are the same or different, and each represents a hydrogen atom, a substituted or unsubstituted alkyl group or the like; or wherein; R¹ and R², R² and R³, R³ and R⁴, R⁴ and R⁵, and R⁵ and R⁶ are respectively bonded to each other to form a bivalent hydrocarbon group; R⁹ are the same or different, and each represents an alkyl group or cycloalkyl group; M is ruthenium (Ru) or the like; X is a ligand; and n is 0, 1 or 2). ;More specifically, the metal complex enables a hydrogenation reaction of various substrates having a stable carbonyl group or the like to be advanced with a high yield under mild conditions.