Dichloromethane → HCID 58495588, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Combine 3-(tert-butoxycarbonylamino-methyl)-6-chloropyridine (1.42 g, 5.85 mmol), 2-cyclohexylvinyl boronic acid (1.35 g, 8.78 mmol), [1,1′-bis(diphenylphosphino)-ferrocene]dichloropalladium(II) complex with DCM (239 mg, 0.293 mmol), and 2M aqueous Na2CO3 (9.65 mL, 19.2 mmol) in 1,4-dioxane (60 mL). Purge the resulting solution with nitrogen for 5 min and heat at 90° C. overnight. Cool the reaction mixture to room temperature and partition the mixture between EtOAc and water. Separate the aqueous phase and extract twice with EtOAc. Dry the combined organic extracts over MgSO4, filter and concentrate in vacuo. Purify by chromatography on silica gel (120 g, pre-packed cartridge) eluting stepwise with hexane/EtOAc (1:0 over 5 min, 49:1 over 5 min, 19:1 over 5 min, 9:1 over 5 min and 85:15 over 5 min; 50 mL/min) to obtain the desired intermediate (1.3 g, 70%). MS (APCI+) m/z: 317 (M+H)+.

Herkunft & Nachweise