Lithium rho-diarylphosphinobenzenesulfonates, process for preparation of the same and use thereof

摘要

Lithium p-diarylphosphinobenzenesulfonates represented by the general formula (I) wherein R<1 >and R<2 >are each optionally substituted aryl; a process for preparing the same; a group VIII metal complex comprising a group VIII metal compound and the above lithium p-diarylphosphinobenzenesulfonate coordinating thereto and a process for hydroformylation with the complex. Hydroformylation with the complex permits easy and industrially advantageous production of aldehydes.