Synthesis of three-dimensionally arranged bis-biphenol ligand on hexaaryl benzene scaffold and its application for cross-pinacol coupling reaction

• Published in: Tetrahedron letters Vol. 52; no. 35; pp. 4567 - 4569
• Main Authors: Amaya, Toru, Miyasaka, Akihiro, Hirao, Toshikazu
• Format: Journal Article
• Language: English
• Published: OXFORD Elsevier Ltd 31.08.2011; Elsevier
• Subjects: Activation; Activation analysis; Benzene; Bimetallic catalyst; Biphenol ligand; Catalysis; Catalysts: preparations and properties; Chemical reactions; Chemistry; Chemistry, Organic; Dinuclear catalyst; Exact sciences and technology; General and physical chemistry; Ligands; Noncondensed benzenic compounds; Organic chemistry; Physical Sciences; Pinacol coupling; Positioning; Preparations and properties; Scaffolds; Science & Technology; Tetrahedrons; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Dinuclear catalyst; Pinacol coupling; Bimetallic catalyst; Biphenol ligand; ZINC METAL; ORGANIC-SYNTHESIS; DUAL ACTIVATION; ASYMMETRIC-SYNTHESIS; ALPHA,BETA-UNSATURATED KETONES; CATALYTIC-SYSTEM; AQUEOUS-MEDIA; ALIPHATIC-ALDEHYDES; STEREOSELECTIVE SYNTHESIS; VANADIUM; Mixed catalyst; Decarbonylation; Ligand; Benzene derivatives; Diels Alder addition; Transition metal; Activation; Aldehyde; Chemical coupling; Pinacolization; Cross reaction; Dinuclear complex; Phenols; Titanium; Chemical synthesis
• ISSN: 0040-4039; 1873-3581
• DOI: 10.1016/j.tetlet.2011.06.113

The rigid bis-biphenol ligand on a hexaaryl scaffold for a dinuclear complex was synthesized. Its preliminary studies on the titanium-induced cross-pinacol coupling reaction were performed based on step-by-step activation of two different aldehydes. The three-dimensionally arranged bis-biphenol ligand on a hexaaryl benzene scaffold for a dinuclear complex was synthesized by the Diels–Alder addition–decarbonylation reaction as a key step. Its preliminary studies on the titanium-induced cross-pinacol coupling reaction were performed based on step-by-step activation of two different aldehydes.