Triphenylphosphine → HCID 59700023, compound

Participants

Reaction Conditions

Reaction Steps

To an 8 ml borosilicate reaction vial were added 150 mg (0.350 mmol) of PS-triphenylphosphine (2.33 mmol.g−1; Argonaut Technologies) and anhydrous methylene chloride (5 ml). The vial was fitted with a rubber septum and the suspension was stirred for 5 minutes in an ice-bath (0° C.). Diisopropyl azodicarboxylate (68 μL, 0.35 mmol) was added dropwise, and the mixture was allowed to warm to room temperature over 20 minutes. To the reaction vial was added 2-pyrrolidin-1-yl-ethanol (54 mg, 0.47 mmol) and 2-methoxy-4-[3-(2-methoxy-phenyl)-1H-pyrrolo[2,3-b]pyridin-5-yl]phenol (60 mg, 0.17 mmol), and the suspension was stirred at room temperature for 8 hours. The yellow reaction mixture was filtered, and the resin was washed three times with DCM and ether, then twice with DCM. The combined filtrate was concentrated to obtain a yellow residue, which was purified by flash chromatography on amine functionalized silica gel (ISCO RediSep® amine column) using a gradient of ethyl acetate in hexanes to afford 12 mg (8%) of 3-(2-methoxy-phenyl)-5-[3-methoxy-4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-1H-pyrrolo[2,3-b]pyridine as a light yellow powder. 1H-NMR (d6-DMSO) δ=11.87 (br.s, 1H), 8.51 (d, 1H), 8.18 (s, 1H), 8.11 (d, 1H), 7.70 (d, 1H), 7.57 (dd, 1H), 7.27 (m, 1H), 7.24 (d, 1H), 7.17 (dd, 1H), 7.12 (dd, 1H), 7.06 (s, 1H), 7.04 (m, 1H), 4.08 (t, 2H), 3.85 (s, 3H), 3.83 (s, 3H), 2.82 (t, 2H), 2.55 (m, 4H), 1.69 (m, 4H); MS m/z: 444 [MH]+.

Provenance & Evidence