170656-93-6

Upstream product

• 67-56-1 methanol 
• 124-38-9 carbon dioxide 
• 1196586-82-9 [Ni(1,2-bis(di-isopropylphosphino)ethane)(η²-C,C-styrene)] 
• 438247-28-0 C₆H₃(CH₃)2ONiCH₂Si(CH₃)3(P(CH₃)3)2 
• 87532-69-2 1,1'-(1,2-ethanediyl)bis[1,1-bis(1-methylethyl)phosphine] 
• 438247-31-5 Ni(CH₂Si(CH₃)3)OC₆H₃(CH₃)2(((CH₃)2CH)2P(CH₂)2P(CH(CH₃)2)2) 
• 201230-82-2 carbon monoxide 
• 438247-32-6 Ni(CH₃)OC₆H₃(CH₃)2(((CH₃)2CH)2P(CH₂)2P(CH(CH₃)2)2) 

Relevant academic research and scientific papers

Nickel-catalyzed reductive hydroesterification of styrenes using CO 2 and MeOH

Complexes [(dippe)Ni(μ-H)]2 (A) (dippe = 1,2-bis-di- isopropylphosphino)ethane) and [(dtbpe)Ni(μ-H)]2 (B) (dtbpe = 1,2-bis-di-tert-butylphospino)ethane) catalyze the reductive hydroesterification of styrenes with the use of CO2 and MeOH. The latter acts as a hydrogen source and as an esterificating agent, to yield the corresponding branched and linear esters in moderate to good yields. In all of the studied reactions the linear esters were obtained in higher amounts than the branched ones. When the hydroesterification reaction was carried out using a stoichiometric metal/substrate ratio, the complexes [(P-P)Ni(CO)2] and [(P-P)Ni(CO3)] (P-P = dippe or dtbpe) were isolated and characterized by standard spectroscopic methods. Compounds [(dtbpe)Ni(CO) 2] and [(dtbpe)Ni(CO3)] were also fully characterized by single-crystal X-ray diffraction.

Synthesis and reactivity studies on alkyl-aryloxo complexes of nickel containing chelating diphosphines: Cyclometallation and carbonylation reactions

Nickel alkyl-aryloxo complexes of composition Ni(R)(O-C6H3-2,6-Me2)(P-P) (R = CH2SiMe3, CH3, CH2CMe2Ph; CH2CMe2Ph) complexes undergo a cyclometallation reaction that leads to the metallacycles Ni(CH2CMe2-o-C6H4)(P-P) together with 2,6-dimethylphenol. The alkyl-aryloxo complexes cleanly react with carbon monoxide giving products resulting from CO insertion and reductive elimination, i.e. Ni(CO)2(P-P) and the corresponding 2,6-dimethylphenyl carboxylates quantitatively.