Morpholine → Tert-butyl 4-(2-morpholinooxazole-4-carbonyl)-3-((pyridin-3-yloxy)methyl)piperazine-1-carboxylate

Participants

Reaction Steps

A solution of tert-butyl 4-(2-chlorooxazole-4-carbonyl)-3-((pyridin-3-yloxy)methyl)piperazine-1-carboxylate (117 mg, 0.277 mmol), morpholine (48 mg, 0.554 mmol) and potassium carbonate (76 mg, 0.554 mmol) in THF (2 mL) was heated to 70° C. overnight. Upon cooling to rt, the reaction mixture was filtered and concentrated under reduced pressure. The material was purified by HPLC (5 to 50% MeCN/0.1% TFA in H2O/0.1% TFA gradient), yielding 165 mg (100%) of the title compound as the TFA salt. LC-MS: RT=6.60 min, [M+H]+=474.1.

Provenance & Evidence