Cobalt

Over the past few decades, economical and ecological cobalt catalysts have attracted intense interest for cross-coupling. Cobalt catalysts are highly active reagents, extensively applied in the efficient and selective synthesis of pharmaceuticals, natural products, and new materials. Co catalysts have been shown a higher reactivity for various C-C bond formations. Cobalt catalysis with cobalt salts feature good functional group tolerance, mild reaction conditions and high chemoselectivity in comparison with palladium and nickel, the most commonly used catalysts for metal-catalyzed cross-coupling. A wide range of novel cobalt catalysis reactions mediated by a variety of organometallic reagents with vinyl, alkyl or aryl halides are possible.

Sigma-Aldrich is proud to provide cobalt catalysts featuring:
  • Low cost
  • Low toxicity
  • Utilized under mild conditions
  • Highly efficient

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497363 Ammonium cobalt(II) sulfate hexahydrate 99% H8CoN2O8S2 · 6H2O
279811 Bis(cyclopentadienyl)cobalt(III) hexafluorophosphate 98% C10H10CoF6P
360147 [1,2-Bis(diphenylphosphino)ethane]dichlorocobalt(II) C26H24Cl2CoP2
555134 [1,1′-Bis(diphenylphosphino)ferrocene]dichlorocobalt(II) 97% C34H28Cl2CoFeP2
493678 Bis(pentamethylcyclopentadienyl)cobalt(III) hexafluorophosphate 98% C20H30CoF6P
268631 Bis(salicylaldehyde)cobalt(II) dihydrate 97% C14H10CoO4·2H2O
274712 N,N′-Bis(salicylidene)ethylenediaminocobalt(II) 99% C16H14CoN2O2
236063 N,N′-Bis(salicylidene)ethylenediaminocobalt(II) hydrate 97% C16H14CoN2O2 · xH2O
345652 N,N′-Bis(salicylidene)-1,2-phenylenediaminocobalt(II) monohydrate 98% C20H14CoN2O2 · H2O
360155 Bis(salicylideniminato-3-propyl)methylaminocobalt(II) 97% C21H25CoN3O2
341630 Chloro(pyridine)bis(dimethylglyoximato)cobalt(III) C13H19ClCoN5O4
361844 Chlorotris(triphenylphosphine)cobalt(I) 97% C54H45ClCoP3
60784 Cobalt puriss. p.a., ≥99.8%, powder Co
266655 Cobalt pieces, 99.5% trace metals basis Co
266639 Cobalt powder, 2 μm particle size, 99.8% trace metals basis Co
403024 Cobalt(II) acetate tetrahydrate ACS reagent, ≥98.0% C4H6CoO4 · 4H2O
727970 Cobalt(II) acetylacetonate ≥99.0% (KT) C10H14CoO4
334030 Cobalt(II) bromide hydrate Br2Co · xH2O
60811 Cobalt carbonyl moistened with hexane (hexane 1-10%), ≥90% (Co) C8Co2O8
255599 Cobalt(II) chloride hexahydrate ACS reagent, 98% Cl2Co · 6H2O
CDS004010 cobalt(ii) sulfate heptahydrate AldrichCPR H14CoO11S
343145 Cobalt(II) iodide 95%, powder CoI2
745553   Cobalt nanowires powder, diam. × L 200-300 nm × 100-200 μm Co
239267 Cobalt(II) nitrate hexahydrate ACS reagent, ≥98% CoN2O6 · 6H2O
230375 Cobalt(II) nitrate hexahydrate reagent grade, 98% CoN2O6 · 6H2O
60832 Cobalt(II) nitrate hexahydrate puriss. p.a., ACS reagent, Ni ≤0.001%, ≥99.0% (KT) CoN2O6 · 6H2O
804010 Co(salen,t-Bu, t-Bu)Cl C36H52ClCoN2O2
245259 Dicarbonylcyclopentadienyl cobalt(I) technical grade C7H5CoO2
262676 Dichlorobis(triphenylphosphine)cobalt(II) 98% C36H30Cl2CoP2
685631 Diiodo(bis(diphenylphosphino)ethane)cobalt(II) C26H24CoI2P2
12902 Potassium hexacyanocobaltate(III) ≥97.0% C6CoK3N6
C1900 Protoporphyrin IX cobalt chloride C34H32ClCoN4O4
233722 Sodium hexanitrocobaltate(III) ACS reagent CoN6Na3O12
275867 5,10,15,20-Tetrakis(4-methoxyphenyl)-21H,23H-porphine cobalt(II) ≥96.0% (HPLC) C48H36CoN4O4
260983 Tris(ethylenediamine)cobalt(III) chloride dihydrate C6H24Cl3CoN6 · 2H2O