Ammonia → 6-{2-{[4-(2-Dimethylaminoethoxy)-3-fluorobenzyl]isopropylamino}-4-methoxyphenyl}-5,6,7,8-tetrahydronaphthalen-2-ol

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To cesium carbonate (36 mg) and potassium iodide (5.0 mg) were sequentially added a solution of pivalic acid 6-{2-[(3-fluoro-4-hydroxybenzoyl)isopropylamino]-4-methoxyphenyl}-5,6,7,8-tetrahydronaphthalen-2-yl ester (25 mg) in tetrahydrofuran (0.8 ml) and a solution of 2-chloro-N,N-dimethylacetamide (11 mg) in tetrahydrofuran (0.2 ml), and the solution was stirred for 1.5 hours at 60° C. The reaction solution was let to cool, then lithium aluminum hydride-aluminum chloride (1.0 M solution in tetrahydrofuran) (0.57 ml) was added dropwise thereto followed by stirring for 1 hour at room temperature. Tetrahydrofuran and ammonia solution were sequentially added thereto, the solution was filtered through celite pad and concentrated under a nitrogen stream; purified from a solution of the resulting residue in N,N-dimethylformamide by LC-MS, the title compound (9.1 mg) was obtained.

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