Aluminium lithium hydride → HCID 23627746, compound

Participants

Reaction Steps

A solution of [(S)-2-Benzyl-4-(3-cyclopentyloxy-4-methoxy-phenyl)-piperazin-1-yl]-acetic acid methyl ester (Example 57) (110 mg, 0.25 mmol) in THF (2 mL) at room temperature was treated with a 1 N THF solution of lithium aluminum hydride (750 μL, 0.75 mmol) and allowed to stir for 12 h. The reaction mixture was quenched with an aqueous 15% NaOH solution (250 μL) followed by water (250 μL) and THF (2 mL). the reaction mixture was then treated with MgSO4, filtered, and evaporated. The residue was then dissolved in EtOAc (3 mL), retreated with MgSO4, filtered, and evaporated to afford product as an oil (75 mg, 73%). 1H NMR (CDCl3) 1.58-1.62 (m, 2H), 1.67-1.88 (m, 6H), 2.74-3.22 (m, 12H), 3.65-3.76 (m, 2H), 3.78 (s, 3H), 4.64-4.67 (m, 1H), 6.34 (dd, J=8.6, 2.9, 1H), 6.40 (d, J=2.6, 1H), 6.75 (d, J=8.6, 1H), 7.20-7.33 (m, 5H). 13C NMR 24.2 (CH2), 33.0 (CH2), 33.0 (CH2), 48.4 (CH2), 49.7 (CH2), 53.9 (CH2), 55.5 (CH2), 56.9 (CH3), 58.1 (CH2), 61.6 (CH), 80.5 (CH), 106.5 (CH), 108.1 (CH), 113.4 (CH), 126.5 (CH) 128.8 (CH), 129.5 (CH), 139.6, 144.7, 146.5, 148.5. LC/MS 4.81 min, [M+1]+ 411.

Provenance & Evidence