Water → HCID 67298312, compound

Participants

Reaction Steps

A suspension of N-(3-chloro-4-fluorophenyl)-6-iodo-2-(pyridin-3-yl)quinazolin-4-amine (synthesized as described in Scheme 1 and 4, substituting 5-iodo-2-nitrobenzoic acid for 2-nitro-5-propoxy-benzoic acid and 3-chloro-4-fluoroaniline for 2-aminobenzamide) (1.00 g, 2.10 mmol), tert-butyldimethyl(2-propynyloxy)silane (0.85 ml, 4.20 mmol), copper(I) iodide (4.0 mg, 0.021 mmol), dichlorobis(triphenylphosphine) palladium (II) (Pd(PPh3)2Cl2) (29 mg, 0.042 mmol), and triethylamine (1.17 ml, 8.39 mmol) in DMF (15 mL) was stirred overnight at room temperature under argon atmosphere. Water (30 mL) and ethyl acetate (30 mL) were added to the mixture. The resultant precipitate was removed by filtration. The filtrate was extracted with EtOAc (2×50 mL). The combined organic layer was washed with water (1×100 mL) and brine (1×100 mL) and was dried over Na2SO4. After filtration and evaporation, the crude product was obtained, which was purified by column chromatography on silica gel (eluted with hexane/ethyl acetate 6:1 to 1:3) to give 0.73 g of 6-(3-(tert-butyldimethylsilyloxy)prop-1-ynyl)-N-(3-chloro-4-fluorophenyl)-2-(pyridin-3-yl)quinazolin-4-amine as light brown solid (67%). LCMS m/z=519 (M+1) (Method D) (retention time=3.22 min). 1H NMR (300 MHz, DMSO) δ 9.99 (s, 1H), 9.35 (s, 1H), 8.62-8.44 (m, 3H), 8.11 (dd, J=6.8, 2.6 Hz, 1H), 7.76-7.66 (m, 3H), 7.45-7.30 (m, 2H), 4.48 (s, 2H), 0.75 (s, 9H), 0.16 (s, 6H).

Provenance & Evidence