Aluminium lithium hydride → (2R,3R)-3-(Allyloxy)-4-(benzylamino)-2-((6-(2,5-dimethyl-1H-pyrrol-1-yl)-4-methylpyridin-2-yl)methyl)butan-1-ol

HRID 1942946Notes

Reaction equation

HRID 1942946 reaction equation
[CH2:1]([O:4][C@@H:5]([CH2:28][NH:29][CH2:30][C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)[C@H:6]([CH2:13][C:14]1[CH:19]=[C:18]([CH3:20])[CH:17]=[C:16]([N:21]2[C:25]([CH3:26])=[CH:24][CH:23]=[C:22]2[CH3:27])[N:15]=1)[C:7](OC(C)C)=[O:8])[CH:2]=[CH2:3].[H-].[H-].[H-].[H-].[Li+].[Al+3]>C1COCC1>[CH2:1]([O:4][C@@H:5]([CH2:28][NH:29][CH2:30][C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)[C@H:6]([CH2:13][C:14]1[CH:19]=[C:18]([CH3:20])[CH:17]=[C:16]([N:21]2[C:25]([CH3:26])=[CH:24][CH:23]=[C:22]2[CH3:27])[N:15]=1)[CH2:7][OH:8])[CH:2]=[CH2:3]

Participants

4

Reactant 2

HCID 21226445Aluminium lithium hydrideHCID 59582524(2s,3r)-Isopropyl 3-(allyloxy)-4-(benzylamino)-2-((6-(2,5-dimethyl-1h-pyrrol-1-yl)-4-methylpyridin-2-yl)methyl)butanoate

Product 1

HCID 44543306(2R,3R)-3-(Allyloxy)-4-(benzylamino)-2-((6-(2,5-dimethyl-1H-pyrrol-1-yl)-4-methylpyridin-2-yl)methyl)butan-1-olYield 80.5%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 19 (400 mg, 0.82 mmol) in THF (20 mL) at 0° C. was added LiAlH4 (48 mg, 1.2 mmol) in several portions. The reaction mixture was allowed to stir at 0° C. for an additional 10 min then quenched with H2O (25 μL). The solvent was removed by rotary evaporation, and the crude product was purified by flash column chromatography (EtOAc:hexanes, 2:1-4:1) to give 20 (280 mg, 0.66 mmol, 80%) as a colorless oil: 1H NMR (500 MHz, CDCl3) δ 2.12 (s, 6H), 2.39 (s, 3H), 2.64-2.67 (dd, J=2.0, 12.0 Hz, 1H), 2.70-2.90 (m, 2H), 2.98-3.03 (dd, J=5.5, 12.5, Hz, 1H), 3.40-3.44 (dd, J=3.0, 11.5 Hz, 1H), 3.56-3.58 (dd, J=3.0, 6.0 Hz, 1H), 3.65-3.69 (dd, J=7.5, 11.5 Hz, 1H), 3.76-3.79 (d, J=13.0 Hz, 1H), 3.83-3.86 (d, J=13.0 Hz, 1H), 3.90-3.94 (dd, J=5.0, 12.5 Hz, 1H), 3.99-4.03 (dd, J=5.5, 12.5 Hz, 1H), 5.15-5.17 (dd, J=1.0, 10.5 Hz, 1H), 5.23-5.27 (dd, J=1.0, 18.5 Hz, 1H), 5.80-5.96 (m, 3H), 6.86 (s, 1H), 6.99 (s, 1H), 7.24-7.40 (m, 5H); 13C NMR (125 MHz, CDCl3) δ 13.5, 21.2, 37.7, 46.4, 49.5, 54.0, 60.8, 70.9, 79.4, 98, 9, 106.9, 117.2, 120.4, 123.7, 127.6, 128.6, 128.7, 128.9, 135.0, 139.2, 149.8, 151.8, 160.6; LCQ-MS (M+H+) calcd for C27H36N3O2 434. found 434; LC-TOF-MS (M+H+) calcd for C27H36N3O2 434.28075. found 434.28071.

Workup

  1. customthen quenched with H2O (25 μL)
  2. customThe solvent was removed by rotary evaporation
  3. customthe crude product was purified by flash column chromatography (EtOAc:hexanes, 2:1-4:1)

Sources & evidence

ORD record
ord-6a7c544e14594b1683a1deeba55e95aa
Source dataset
uspto-grants-2013_03
Patent number
US08389731B2

Reaction notes

Loading…