Diisopropylethylamine → Methyl 1-(4-(5-benzyl-1H-indol-2-yl)-3-fluorobenzyl)azetidine-3-carboxylate

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Reaction Steps

To a sealed flask was added 4-benzyl-2-iodobenzenamine (0.20 g, 0.65 mmol) and methyl 1-(4-ethynyl-3-fluorobenzyl)azetidine-3-carboxylate (0.32 g, 1.3 mmol) in THF (15 mL). To this solution was added PdCl2(PPh3)2 (0.045 g, 0.065 mmol), CuI (0.025 g, 0.13 mmol), and ethyldiisopropylamine (0.90 mL, 5.2 mmol). The flask was flushed with Ar, sealed and placed in a preheated oil bath at 100° C. for 3 h. The mixture was concentrated under reduced pressure to afford a dark oil which was adsorbed onto silica and purified (30% EtOAc/hexanes to 100% EtOAc) to afford title compound as a yellow oil. MS (ESI) m/z: Calculated: 428.1; Observed: 429.1 (M++1).

Provenance & Evidence