In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Cationic cobalt(I) catalysts for the asymmetric cyclocarbonylation of 1,6-enynes, published in 2005-08-31, which mentions a compound: 63295-48-7, mainly applied to enyne asym cyclocarbonylation catalyst cobalt carbonyl phosphinobiphenyl complex; cobalt carbonyl phosphinobiphenyl complex preparation structure Pauson Khand catalyst; cyclopentenone asym synthesis Pauson Khand cobalt phosphinobiphenyl complex catalyst; cycloaddition Pauson Khand asym heptenyne; crystal structure cobalt carbonyl phosphinobiphenyl complex; mol structure cobalt carbonyl phosphinobiphenyl complex, Recommanded Product: Iron(III) trifluoromethanesulfonate.
Co(I) complexes, modified with (R)-(6,6′-dimethoxybiphenyl-2,2′-diyl)bis(diphenylphosphine) [Co((R)-MeO-Biphep)(CO)3]X (X = BF4 (1) or OTf (2)), were synthesized and characterized. The compounds have a trigonal bipyramidal structure and are fluxional. They were tested as catalyst precursors for the enantioselective cyclocarbonylation of 4,4-bis(carboethoxy)hept-6-en-1-yne. Enantioselectivities up to 78.5% were attained. However, activity and stereoselectivity are lower compared to catalytic systems based on Co2(CO)8 modified with the same atropisomeric ligand.
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Reference:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem