Potassium Fluoride → 1-(3,4-Dimethoxyphenyl)-2-nitro-6-cyano-6-(prop-2-yl)-6-(3,4-dimethoxyphenyl)hexan-3-ol

Beteiligte Stoffe

Reaktionsschritte

A mixture of 2-(3,4-dimethoxyphenyl)-1-nitroethane (4, 135 g, 0.64 mol), 2-(3,4-dimethoxyphenyl)-2-(3-oxopropyl)-2-isopropylacetonitrile (7, 156 g, 0.57 mol) and KF (19.3 g, anhydrous, Aldrich) in 2-propanol (2.0 L) was heated to 50°-55° C. for about 40 hours. The mixture was then cooled to room temperature and the isopropanol removed in vacuo. The residue was dissolved in CH2Cl2 (1.6 L) and filtered through Celite (50 g). The filtrate was extracted with saturated aqueous NaHCO3 (2×500 mL), the organic layer evaporated, and the product recrystallized from ethyl acetate-hexane (1:1) to yield 1-(3,4-dimethoxyphenyl)-2-nitro-6-cyano-6-(i-propyl)-6-(3,4-dimethoxyphenyl)-hexan-3-ol (8, 205 g, m.p. 171°-173° C., MS m/e 486(M+)).

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