Cesium carbonate → HCID 59392827, compound

Participants

Reaction Conditions

Reaction Steps

2-chloroethylmethyl ether (13.5 μl, 0.143 mmol) is added dropwise to a solution of 8-(3,5-Difluoro-4-morpholin-4-ylmethyl-phenyl)-2-(1-piperidin-4-yl-1H-pyrazol-4-yl)-quinoxaline (as obtained in example 98, 67 mg, 0.137 mmol), Cs2CO3 (24 mg, 0.075 mmol) in DMF (0.5 ml). The resulting mixture is heated under Ar at 95° C. for 17 h. Two products are formed in a ratio 1:1, as identified by example 122 and example 123. The reaction is quenched with water and extracted with EtOAc several times. The combined organic layers are washed with brine, dried over Na2SO4, filtered and the filtrate is concentrated in vacuo. The residue is purified by chromatography on a 40 g silica gel column on a Combiflash Companion™ (Isco Inc.) apparatus (gradient CH2Cl2/(CH2Cl2:EtOH:NH3 90:9:1) from 1:0=>0:1) to afford example 122 and example 123.

Provenance & Evidence