Aluminium lithium hydride → (S)-2-(N,N-Dibenzylamino)-1-pentanol

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To a cold (0° C.) suspension of LiAlH4 (184 mg, 4.84 mmol) in THF (10 mL), a solution of ester 9 (375 mg, 0.97 mmol) in THF (2.5 mL) was added. The mixture was stirred at 0° C. for 2 h, and then quenched by dropwise addition of EtOH (3 ml). Na—K tartrate solution (10% aq, 30 mL) was added, and the crude was extracted with EtOAc (3×30 mL), dried over Na2SO4, concentrated in vacuo and purified by column chromatography on silica (hexane/EtOAc 5:1) to obtain alcohol 10 as a colorless oil (170 mg, 62% yield).

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