Potassium Carbonate → HCID 57816823, compound

Participants

Reaction Steps

A mixture of 64 (300.0 mg, 1.45 mmol) and K2CO3 (200.0 mg, 1.45 mmol) was dissolved in DMF (5 mL) and to it was added 65 (420.0 mg, 1.45 mmol). The mixture was left to stir over night at room temperature, solvent was evaporated by rotary evaporation. The remaining solid was taken up in water and the product extracted with DCM (3×50 mL). Combined organic layers were washed with water (1×50 mL) and brine (2×50 mL) and dried over Na2SO4. Product was purified by flash column eluting 0-20% methanol in ethyl acetate to give 299.4 mg (50%) 66 as a solid. 1H NMR (300 MHz, CDCl3) δ 0.818 (t, 3H), 1.15 (t, 3H), 1.24 (d, 3H), 1.27 (m, 2H), 1.43 (m, 2H), 2.99 (d, 2H), 3.28 (m, 2H), 3.87 (m, 2H), 4.01 (m, 2H), 5.09 (s, 2H), 7.11 (m, 4H), 7.36 (s, 1H). LCMS: m/z for C20H29N6O2P++H observed 417.3 at 1.76 minutes of a 3.5 minute run, gradient 5-95% CH3CN in H2O.

Provenance & Evidence