4-(3-Chloro-4-methoxy-benzylamino)-6-cyano-8-ethyl-quinoline-3-carboxylic acid ethyl ester → 4-(3-Chloro-4-methoxy-benzylamino)-8-ethyl-3-hydroxymethyl-quinoline-6-carbonitrile

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Reaction Steps

To a suspension of 100 mg (0.236 mmol) of 4-[[(3-chloro-4-methoxyphenyl)methyl]amino]-6-cyano-8-ethylquinoline-3-carboxylic acid ethyl ester in 2.8 mL anhydrous THF under nitrogen, was added 1.2 mL (5.0 eq) of 1M lithium tri-t-butoxyaluminohydride/THF. The resulting mixture was refluxed overnight with stirring. The reaction was quenched with 1 mL of MeOH and partitioned between 75 mL 1M NaOH and 100 mL CH2Cl2. The organic phase was washed with 1M NaOH (2×30 mL) and dried over MgSO4. Removal of the solvent under reduced pressure gave 75 mg (84% yield) of the title compound as a light yellow solid. The analytical sample was obtained by trituration in ether: mp: 188-189° C. LC: 3.15′; MH+: 382.

Provenance & Evidence