210900-83-7

Upstream product

• 1060749-49-6 2-hydroxy-5-phenylcyclohex-1-enecarbaldehyde 

Downstream Products

• 1098784-60-1 (1-carbonyl-2-oxo-5-phenyl-cyclohexendiyl)-(1-ethenyl-2-hydroxy-ethyl)-trans-bis(trimethylphosphan)cobalt(III) 
• 305819-60-7 mer-(1-Carbonyl-2-oxo-5-phenyl-cyclohexen-diyl)(1-phenylethenyl)-tris(trimethylphosphan)cobalt(III) 
• 305819-57-2 (1-Carbonyl-2-oxo-5-phenyl-cyclohexen-diyl)(η(1)-1-phenylethenyl)-trans-bis(trimethylphosphan)cobalt(III) 

Relevant academic research and scientific papers

Reactivity of mer-hydrido(2-mercaptobenzoyl)tris(trimethylphosphine) cobalt(iii) complex

The reactivity of mer-hydrido(2-mercaptobenzoyl)tris(trimethylphosphine) cobalt(iii) complex 1 was intensively studied. A series of sulfur-coordinated organocobalt complexes (2-8) were obtained through the reactions of 1 with RX (RX = HCl, C2H5Br and CH3I), 2-(diphenylphosphanyl)phenol, 2-(diphenylphosphino)benzenethiol, and CO. The reaction of complex 1 with ethynyltrimethylsilane under 1 bar of CO afforded a penta-coordinate cobalt(i) complex 11via insertion reaction of CC bond of ethynyltrimethylsilane into Co-H bond and subsequent C,C-coupling reaction (reductive elimination). The formation mechanism of 11 was proposed and partly-experimentally verified. As an intermediate, the tetra-coordinate cobalt(i) complex 13 was isolated through the reaction of complex 1 with ethynyltrimethylsilane in the absence of CO. The crystal structures of complexes 2-4, 8 and 11 were determined by X-ray diffraction.

Hydrido(acylphenolato)cobalt(III) compounds containing trimethylphosphane ligands

Salicylaldehyde derivatives and related β-hydroxo aldehydes CHO-CR=CR′-OH react with CoMe(PMe3)4 via oxidative substitution to form low-spin d6 complexes mer-CoH(CO-CR=CR′-O)(PMe3)3. Reductive elimination of acyl and hydride functions from cis positions at the metal is less favourable than in carbonyl cobalt intermediates through a pronounced stabilization by neutral phosphane σ-donor and dianionic acylenolato chelate ligands. Reactions of the hydride complexes with iodomethane or with protic acids HX afford octahedral molecular complexes mer-CoX(CO-CR=CR′-O)(PMe3)3 (X =I, OAc) and mer-CoX(CO-CR=CR′-O)(PMe3)2 (X = OAc, O-CR′=CR-CHO) without opening of the acylenolato chelate ring.