Triphenylphosphine → HCID 67432750, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of the product from Step 2 (220 mg, 0.392 mmol) in THE (4 ml) and water (2 ml), was added resin-bound triphenylphosphine (154 mg, 0.588 mmol, 1.5 equiv). The resulting mixture was stirred at 23° C. for 18 h. The resin-bound triphenylphosphine was removed by filtration, and the residual bi-phasic, orange-maroon mixture was partitioned between EtOAc (45 ml) and water (55 ml). The separated organic layer was dried over Na2SO4, filtered and concentrated. The crude orange oil was purified via reverse-phase HPLC (acetonitrile/water gradient with 0.1% TFA present). The TFA salt was converted to the free base by partitioning between EtOAc (40 ml) and saturated aqueous NaHCO3 (45 ml). The organic layer was dried over Na2SO4, filtered and concentrated. The organic layer was filtered and concentrated, yielding methyl (1S,4R)-4-{5-[3-(aminomethyl)-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl]-1,3-thiazol-2-yl}-4-hydroxy-2,2-dimethylcyclohexanecarboxylate (55 mg, 25%), as an orange oil. MS ESI: [M+H]+ m/z 536.2

Provenance & Evidence