Reaction catalyst for cross coupling and method for manufacturing aromatic compound

摘要

The present invention provides a novel organophosphorus ligand capable of efficiently carrying out a cross-coupling reaction to obtain a target product in high yield, and furthermore, it is possible to fine-tune the three-dimensional properties and electronic properties, and by using them, a high yield It is an object to provide a manufacturing method capable of carrying out a low cross coupling reaction. In order to solve the above problems, the present invention provides a phosphine compound represented by the following formula (1) as a solution. [Formula 1] (In the formula, R ¹ and R ² each independently represent a secondary alkyl group, a tertiary alkyl group or a cycloalkyl group, and R ³ and R ⁴ are each independently hydrogen, an aliphatic group, a heteroaliphatic group, an aromatic group, an alicyclic group or a hetero In addition, R ³ and R ⁴ do not have a number of atoms, and R ³ and R ⁴ do not take hydrogen at the same time.)