Pyridine → HCID 57663157, compound

Participants

Reaction Steps

1-Chloro-N,N,2-trimethyl-1-propenylamine (0.1 mL, 0.74 mmol) was added to a solution of 3-[(1,1-dioxido-3,4-dihydro-2H-5,1,2-benzoxathiazepin-7-yl)oxy]-5-{[(S)-1-methyl-2-(methyloxy)ethyl]oxy}benzoic acid (0.21 g, 0.50 mmol) in DCM (5 mL) and stirred for 1 hour. 1,1-Dimethylethyl 3-amino-1H-pyrazole-1-carboxylate (137 mg, 0.74 mmol) then pyridine (0.08 mL, 0.99 mmol) were added and the reaction stirred for a further 45 minutes. The mixture was reduced in vacuo and ethyl acetate (50 mL) and water (50 mL) added. The aqueous layer was re-extracted into ethyl acetate (50 mL) and the combined organics washed with water (50 mL), brine (50 mL), dried (MgSO4), filtered and reduced in vacuo to give a golden oil which was chromatographed on silica, eluting with 30-60% ethyl acetate in isohexane, to give a colourless oil. The oil was dissolved in ethyl acetate (30 mL) and washed with 1M hydrochloric acid, dried (MgSO4), filtered and reduced in vacuo to give the desired compound as a colourless oil (47 mg).

Provenance & Evidence