3,4-Xylenethiol → HCID 67157362, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-(7-bromo-isoquinoline-1-yl)-piperazine-1-carboxylic acid, tert-butyl ester (0.5 g, 1.3 mmol), 3,4-dimethyl-thiophenol (175 uL, 1.3 mmol), NatBuO (0.44 g, 4.5 mmol), Pd(PPh3)4 (74 mg, 0.065 mmol) in n-BuOH (10 mL) was heated at 110° C., 3 h. The reaction mixture was filtered. The filtrate was concentrated and the residue was dissolved in ethyl acetate. The organic phase was washed with water (50 mL×3), separated and dried (MgSO4), filtered. The volatiles were evaporated and the residue was purified by flash column chromatography (SiO2, n-pentane:ethyl acetate 9.5:0.5→8:2) to give 260 mg of the title compound as colorless oil (yield 44%). 1H NMR (CDCl3) δ 8.00-8.10 (m, 2H), 7.55-7.65 (m, 3H), 7.40-7.50 (m, 1H), 7.10-7.30 (m, 2H), 3.30-3.40 (m, 4H), 3.10-3.20 (m, 4H), 2.30 (s, 3H), 2.25 (s, 3H), 1.50 (s, 9H).

Provenance & Evidence