Reaktion #972221

Reaktionsgleichung

THF

2-chloro-5-[(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine

cyclohexylzinc bromide

→

2-cyclohexyl-5-[(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigequenched with pH 7 PBS
2. 2
   Extraktionextracted with DCM

Vorschrift

200 mg (0.85 mmol, 1 eq) 2-chloro-5-[(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine, 50 mg (0.043 mmol, 0.05 eq) tetrakis(triphenylphosphine)palladium(0), and 2 mL of 0.5 M cyclohexylzinc bromide in THF (1 mmol, 1.1 eq) were combined. The reaction mixture was heated at 150° C. in the microwave for 5 min, quenched with pH 7 PBS, extracted with DCM. Silica gel chromatography (gradient 0% to 40% EtOAc/Hexanes) gave 2-cyclohexyl-5-[(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine (L-001106449). The mono HCl salt was made by dissolving the free base into diethyl ether, adding 1 eq of HCl, and isolated by filtration. LC-MS calculated for C17H18N2S 282, observed m/e 283.3 (M+H)+. +H-NMR (500 MHz, DMSO-d6) δ 8.87 (s, 1H), 8.30 (d, 1H), 8.03 (s, 1H), 7.71 (d, 1H), 2.94 (m, 1H), 2.69 (s, 3H), 1.35-1.91 (m, 10H).

Quelle