Li, Yingze; Krause, Jeanette A.; Guan, Hairong published the artcile< Silane Activation with Cobalt on the POCOP Pincer Ligand Platform>, HPLC of Formula: 52160-51-7, the main research area is aldehyde hydrosilylation cobalt pincer complex catalyst silane siloxane; bisphosphinoxyphenyl cobalt pincer complex preparation crystal structure hydrosilylation catalyst; mol structure phosphinoxyphenyl cobalt pincer complex.
Co POCOP pincer complexes {κP,κC,κP-2,6-(iPr2PO)2C6H3}Co(PMe3)2 (1) and {κP,κC,κP-2,6-(iPr2PO)2-4-NMe2-C6H2}Co(PMe3)2 (2) were synthesized via C-H bond activation of the pincer ligands with HCo(PMe3)4. Silanes such as PhSiH3, Ph2SiH2, and (EtO)3SiH can undergo Si-H oxidative addition with these Co(I) complexes, though reversibly. One of the silane activation products, namely, {κP,κC,κP-2,6-(iPr2PO)2C6H3}Co(H)(SiH2Ph)(PMe3) (3), was isolated and shown to eliminate PhSiH3 upon evaporation to form {κP,κC,κP-2,6-(iPr2PO)2C6H3}Co(PMe3) (4). Under heating, redistribution of PhSiH3 in 3 can take place, resulting in {κP,κC,κP-2,6-(iPr2PO)2C6H3}Co(H)(SiH3)(PMe3) (5) and Ph2SiH2. Complexes 1-3 were established as catalysts for the hydrosilylation of aldehydes bearing various functional groups. According to the mechanistic studies, the silyl hydride species exists in the catalytic cycle, whereas the bis(trimethylphosphine) species sits outside the catalytic cycle. Dissociation of PMe3 is required prior to aldehyde insertion into the silyl hydride species, which is the turnover-limiting step of the catalytic cycle. Consequently, 3 outperforms 1 in catalyzing the hydrosilylation reaction due to the presence of only one PMe3 ligand. The structures of 1-4 were studied by x-ray crystallog.
Organometallics published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 52160-51-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H9NO, HPLC of Formula: 52160-51-7.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts