Sodium Carbonate → N-[1-[3',4'-bis(methyloxy)-4-biphenylyl]-2-(1-pyrrolidinyl)ethyl]-2-(6,7-dichloro-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)-N-methylacetamide

Participants

Reaction Steps

To a solution of N-[1-(4-bromophenyl)-2-(1-pyrrolidinyl)ethyl]-2-(6,7-dichloro-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)-N-methylacetamide (70 mg, 0.13 mmol) and 3,4-dimethoxyphenylboronic acid (26 mg, 0.14 mmol) in DMF (1 mL) was added Pd(dppf)Cl2 (5.3 mg, 0.0065 mmol) followed by a 2M aqueous solution of Na2CO3 (0.26 mL, 0.52 mmol). The resultant mixture was stirred at 80° C. for 16 h. The mixture was filtered through a 0.45 um polypropylene filter and purified by Gilson Preparation HPLC (Xterra Prep RP, 19×150 mm, 18 mL/min, PH 10 with NH4OH, A: acetonitrile B: water, A: 40 to 99% over 15 min, UV detection at 214 nm) to give 30.1 mg (39%) of the title compound as an off white solid. MS (ES) m/e 598.1 [M+H]+.

Provenance & Evidence