反应 #3025377
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US09040549B2
反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: Crude 4-amino-2-chloro-3-methylphenyl thiocyanate (600 mg, 3.0 mmol) was dissolved in a mixture of methanol:water (2:1, 22 mL) and cooled to 0° C. Sodium hydrosulfide monohydrate (338 mg, 4.6 mmol) and sodium borohydride (447 mg, 11.8 mmol) were added then the mixture was allowed to warm to room temperature and stir overnight. After this time sodium hydroxide (96 mg, 2 4 mmol) was added followed by 2,4-dichloropyrimidine (360 mg, 2 4 mmol) and the mixture allowed to stir for a further 24h. The methanol was removed in vacuo and then the mixture was extracted with ethyl acetate. The extracts were dried (Na2SO4) and evaporated then the residue was purified by flash chromatography to afford 3-chloro-4-[(2-chloropyrimidin-4-yl)thio]-2-methylaniline (353 mg, 41%). to warm to room temperature to stir for a further 24h The methanol was removed in vacuo the mixture was extracted with ethyl acetate The extracts were dried (Na2SO4) evaporated the residue was purified by flash chromatography
来源 ID: ord-bdf6316b2b9347548381cd6d76757d55