Methanone, [2-hydroxy-4-(oxiranylmethoxy)phenyl]phenyl- → 2-Hydroxy-4-{3-[N-butyl-N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)amino]-2-hydroxypropoxy}benzophenone

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A mixture of 4.0 g (14.8 g mmol) of 2-hydroxy-4-(2,3-epoxypropoxy)benzophenone, 6.9 g (22.2 mmol) of 4-butylamino-1-cyclohexyloxy-2,2,6,6-tetramethylpiperidine, and 40 ml of ethanol is heated at reflux for 4 hours. Ethanol is evaporated, and the residue is purified by flash chromatography on silica gel (4:1 heptane: ethyl acetate) to afford 7.9 g (92% yield) of the title compound, a yellow oil.

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