Methanol → 4-((1R,2R)-1-(5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl)-2-hydroxypropylamino)benzo[b]thiophene-7-carbonitrile

HRID 563323Notes

Reaction equation

HRID 563323 reaction equation
[C:1]([C:3]1[C:8]2[S:9][CH:10]=[CH:11][C:7]=2[C:6]([NH:12][C@H:13]([C@H:27]([OH:29])[CH3:28])[C:14]([NH:16][NH:17][C:18](=[O:26])[C:19]2[CH:24]=[CH:23][C:22]([F:25])=[CH:21][CH:20]=2)=O)=[CH:5][CH:4]=1)#[N:2].CCN(P1(N(C)CCCN1C)=NC(C)(C)C)CC.CO>C1COCC1>[F:25][C:22]1[CH:21]=[CH:20][C:19]([C:18]2[O:26][C:14]([C@H:13]([NH:12][C:6]3[C:7]4[CH:11]=[CH:10][S:9][C:8]=4[C:3]([C:1]#[N:2])=[CH:4][CH:5]=3)[C@H:27]([OH:29])[CH3:28])=[N:16][N:17]=2)=[CH:24][CH:23]=1

Participants

5

Reactant 3

HCID 887MethanolHCID 35138512-((1,1-Dimethylethyl)imino)-N,N-diethylhexahydro-1,3-dimethyl-2lambda5-1,3,2-diazaphosphorin-2-amineHCID 67006522N'-((2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoyl)-4-fluorobenzohydrazide

Product 1

HCID 441998334-((1R,2R)-1-(5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl)-2-hydroxypropylamino)benzo[b]thiophene-7-carbonitrileYield 43.5%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of N′-((2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoyl)-4-fluorobenzohydrazide (0.41 g, 0.99 mmol) in THF (80 mL) was added PS-BEMP (1.36 g, 2.99 mmol, ˜2.2 mmol/g) and p-TsCl (191 mg, 1.0 mmol) at room temperature. The mixture was stirred at room temperature for 15 h, then methanol (5 mL) was added to quench the reaction. The resin was filtered and washed with MeOH. The combined filtrate was concentrated to give a residue, which was purified by flash chromatography to afford the title compound 4-((1R,2R)-1-(5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl)-2-hydroxypropylamino)benzo[b]thiophene-7-carbonitrile (170 mg, 43%). 1H NMR (400 MHz, Acetone-d6, δ in ppm) 8.03 (dd, J=5.3, 8.8 Hz, 2H), 7.84 (d, J=5.6 Hz, 1H), 7.71 (d, J=5.6 Hz, 1H), 7.64 (d, J=8.2 Hz, 1H), 7.32 (t, J=8.8 Hz, 2H), 6.86 (d, J=8.2 Hz, 1H), 6.69 (d, J=8.8 Hz, 1H), 5.13 (dd, J=6.4, 8.8 Hz, 1H), 4.66 (d, J=6.1 Hz, 1H), 4.57 (m, 1H), 1.48 (d, J=6.2 Hz, 3H).

Workup

  1. customto quench
  2. customthe reaction
  3. filtrationThe resin was filtered
  4. washwashed with MeOH
  5. concentrationThe combined filtrate was concentrated
  6. customto give a residue, which
  7. customwas purified by flash chromatography

Sources & evidence

ORD record
ord-3ac5ee51f3ca4cbd8b0e473e29fe0aa2
Source dataset
uspto-grants-2011_11
Patent number
US08067448B2

Reaction notes

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