Tetrahydrofuran → 2-methyl-2-(4-{2-[2-(2,2,2-trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl}-pyrazol-1-yl)-propylamine

HRID 1849330Notes

Reaction equation

HRID 1849330 reaction equation
[F:1][C:2]([F:35])([F:34])[CH2:3][N:4]1[C:8]([C:9]2[S:10][C:11]3[CH2:12][CH2:13][O:14][C:15]4[CH:22]=[C:21]([C:23]5[CH:24]=[N:25][N:26]([C:28]([CH3:33])([CH3:32])[C:29]([NH2:31])=O)[CH:27]=5)[CH:20]=[CH:19][C:16]=4[C:17]=3[N:18]=2)=[N:7][CH:6]=[N:5]1.O1CCCC1.[AlH4-].[Li+]>>[CH3:33][C:28]([N:26]1[CH:27]=[C:23]([C:21]2[CH:20]=[CH:19][C:16]3[C:17]4[N:18]=[C:9]([C:8]5[N:4]([CH2:3][C:2]([F:1])([F:35])[F:34])[N:5]=[CH:6][N:7]=5)[S:10][C:11]=4[CH2:12][CH2:13][O:14][C:15]=3[CH:22]=2)[CH:24]=[N:25]1)([CH3:32])[CH2:29][NH2:31]

Participants

4

Reactant 3

HCID 8028TetrahydrofuranHCID 28112Lithium aluminum hydrideHCID 670617512-(4-{2-[2-(2,2,2-Trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl}-pyrazol-1-yl)-isobutyramide

Product 1

HCID 582042072-methyl-2-(4-{2-[2-(2,2,2-trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl}-pyrazol-1-yl)-propylamineYield 7.2%

Procedure

To a solution of 2-(4-{2-[2-(2,2,2-Trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl}-pyrazol-1-yl)-isobutyramide (0.182 g, 0.000361 mol) in tetrahydrofuran (5.864 mL, 0.07229 mol) under N2 at 0° C. was added lithium tetrahydroaluminate (1M in THF, 1.44 mL, 0.00145 mol) dropwise. The reaction was stirred at room temperature for 6 h. The reaction was quenched with saturated Na2SO4 until no more hydrogen evolution was observed. MgSO4 was added and the solution was filtered and rinsed with copious amounts of methylene chloride. The mixture was concentrated and purified by reverse-phase HPLC to give 412 (12.8 mg) as a colorless solid. MS(ESI+) 490.1. 1H NMR (400 MHz, DMSO) δ 8.36 (s, 1H), 8.29 (s, 1H), 8.26 (d, J=8.3, 1H), 7.98 (s, 1H), 7.49 (dd, J=8.3, 1.7, 1H), 7.37 (d, J=1.7, 1H), 5.86 (q, J=8.7, 2H), 4.39 (t, J=5.0, 2H), 3.47 (t, J=5.0, 2H), 2.86 (s, 2H), 1.50 (s, 6H)

Workup

  1. customThe reaction was quenched with saturated Na2SO4 until no more hydrogen evolution
  2. additionMgSO4 was added
  3. filtrationthe solution was filtered
  4. washrinsed with copious amounts of methylene chloride
  5. concentrationThe mixture was concentrated
  6. custompurified by reverse-phase HPLC

Sources & evidence

ORD record
ord-d35da9e5aecb44b2a6b77bc90493347d
Source dataset
uspto-grants-2015_02
Patent number
US08952043B2

Reaction notes

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