Allylamine → N-Allyl-4-oxo-4-[4'-(trifluoromethoxy)-1,1'-biphenyl-4-yl]butanamide

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반응 단계

Methyl-4-oxo-4-[4′-(trifluoromethoxy)-1,1′-biphenyl-4-yl]butanoate (VIII-a-1) (18.2 g, 52 mmol) is treated with allylamine (41.6 g, 730 mmol) and ammonium chloride (1.8 g, 33 mmol) and heated under reflux for 6 h. For work-up, the mixture is poured into ice-cold aqueous HCl (2 M) and extracted with ethyl acetate. The combined organic phases are dried (Na2SO4) and concentrated. The crude product (17.7 g, content: 84.5%, HPLC, 100% method) is recrystallized from toluene.

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