Tert-Butyl nitrite → HCID 59542515, compound

Participants

Reaction Steps

2-Amino-5-(2,2,2-trifluoro-ethyl)-thiophene-3-carboxylic acid ethyl ester (1.76 g, 6.96 mmol) was added to a suspension of t-butyl nitrite (10.4 mmol) and copper (II) chloride (26.8 mmol) in IMS (50 mL). The reaction mixture was stirred for 1.5 hours then quenched with saturated aqueous ammonium chloride (7 mL). The solvent was removed under vacuum and the residue partitioned between DCM and water. The organic solution was separated and dried over magnesium sulphate, filtered and the solvent evaporated. The product was purified by column chromatography on silica, eluting with 0%-35% t-butylmethylether in cyclohexane. The fractions containing the desired product were concentrated under vacuum to give the title compound (1.24 g). 1H NMR (400 MHz, CHCl3-d): δ 8.05 (s, 1H), 7.45 (s, 1H), 4.3 (q, 2H), 3.6 (q, 2H), 1.37 (t, 3H).

Provenance & Evidence