Tetradentate ligand and metal complex and preparation method and application thereof

• Main Authors: ZHANG SHAOCHUN, MOU XINDONG
• Format: Patent
• Language: Chinese; English
• Published: 06.05.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a novel pyridyl-containing SNNN tetradentate ligand L as shown in a general formula (1), a metal complex MXY (L) containing the SNNN tetradentate ligand L, a preparation method of the metal complex MXY (L), and a method for preparing an alcohol compound through catalytic hydrogenation of an ester compound by adopting the metal complex MXY (L). The reaction activity of the catalyst is improved through the synergistic effect of-NH-containing groups and metal H in the ester hydrogenation process, on the other hand, due to the fact that pyridine groups and sulfur atoms (S) have the high coordination capacity and the electron-rich property, center metal is more electron-rich, and the activity of the catalyst is improved; meanwhile, pyridine groups and sulfur atoms (S) are more stable to air and water relative to a phosphine ligand (P), the tetradentate ligand SNNN and metal ruthenium salt form a tetradentate complex, and the complex has higher stability, so that the catalyst has higher stab