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1,2-Dichloroethane → 4-cyano-N'-((2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoyl)benzohydrazide

HRID 470857
Notes
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Reaction equation

HRID 470857 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:17]([OH:19])[CH3:18])[C:14]([OH:16])=O)=[CH:5][CH:4]=1)#[N:2].[C:20]([C:22]1[CH:31]=[CH:30][C:25]([C:26]([NH:28][NH2:29])=[O:27])=[CH:24][CH:23]=1)#[N:21].C1C=CC2N(O)N=NC=2C=1.C(Cl)CCl.CCN(CC)CC>C1COCC1.CN(C=O)C>[C:20]([C:22]1[CH:23]=[CH:24][C:25]([C:26]([NH:28][NH:29][C:14](=[O:16])[C@H:13]([NH:12][C:6]2[C:7]3[CH:11]=[CH:10][S:9][C:8]=3[C:3]([C:1]#[N:2])=[CH:4][CH:5]=2)[C@H:17]([OH:19])[CH3:18])=[O:27])=[CH:30][CH:31]=1)#[N:21]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 5

HCID 111,2-DichloroethaneHCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 4567324-CyanobenzohydrazideHCID 67007071(2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoic acid

Product 1

HCID 67007080
4-cyano-N'-((2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoyl)benzohydrazide
Yield 82.3%

Reagents, catalysts & solvents 1

HCID 21974620tetrahydrofuran N,N-dimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a mixture of (2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoic acid (1.0 g, 3.62 mmol), 4-cyanobenzhydrazide (590 mg, 3.66 mmol), HOBt (495 mg, 3.66 mmol) in THF DMF (1:1) (40 mL) was added EDC (1.05 g, 5.48 mmol) and Et3N (0.80 mL, 5.74 mmol) at 0° C. The mixture was stirred at 0° C. for 30 min., then at room temperature overnight. The reaction was quenched by adding water and extracted with EtOAc (500 mL). The EtOAc extracts were washed with water, brine and dried over Na2SO4. Removal of the solvent and purification of the residue gave the title compound 4-cyano-N′-((2R,3R)-2-(7-cyanobenzo[b]thiophen-4-ylamino)-3-hydroxybutanoyl)benzohydrazide (1.25 g, 82%). 1H NMR (400 MHz, Acetone-d6, δ in ppm) 8.10 (d, J=8.6 Hz, 2H), 7.93 (d, J=8.6 Hz, 2H), 7.83 (d, J=5.5 Hz, 1H), 7.71 (d, J=5.5 Hz, 1H), 7.67 (d, J=8.4 Hz, 1H), 6.71 (d, J=8.4 Hz, 1H), 6.35 (d, J=7.8 Hz, 1H), 4.26 (m, 2H), 1.42 (d, J=6.3 Hz, 3H).

Workup

  1. customat room temperature
  2. customovernight
  3. customThe reaction was quenched
  4. additionby adding water
  5. extractionextracted with EtOAc (500 mL)
  6. washThe EtOAc extracts were washed with water, brine
  7. dry with materialdried over Na2SO4
  8. customRemoval of the solvent and purification of the residue

Sources & evidence

ORD record
ord-9052763fa00f448baf20db1cd04e39ff
Source dataset
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08629167B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes