Benzenepropanal → HCID 11628259, compound

HRID 551899Notes

Reaction equation

HRID 551899 reaction equation
[CH2:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]#[C:12][C:13]2[CH:33]=[CH:32][C:16]([CH2:17][NH:18][C:19]3[CH:31]=[CH:30][C:22]4[O:23][C:24]([CH3:29])([CH3:28])[O:25][C:26](=[O:27])[C:21]=4[CH:20]=3)=[CH:15][CH:14]=2)=[CH:7][CH:6]=1)[CH2:2][CH2:3][CH3:4].[C:34]1([CH2:40][CH2:41][CH:42]=O)[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[CH2:1]([C:5]1[CH:6]=[CH:7][C:8]([C:11]#[C:12][C:13]2[CH:33]=[CH:32][C:16]([CH2:17][N:18]([CH2:42][CH2:41][CH2:40][C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)[C:19]3[CH:31]=[CH:30][C:22]4[O:23][C:24]([CH3:29])([CH3:28])[O:25][C:26](=[O:27])[C:21]=4[CH:20]=3)=[CH:15][CH:14]=2)=[CH:9][CH:10]=1)[CH2:2][CH2:3][CH3:4]

Participants

5

Reactant 3

HCID 7707BenzenepropanalHCID 5049666Sodium triacetoxyborohydrideHCID 114761686-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4H-1,3-benzodioxin-4-one

Product 1

HCID 11628259HCID 11628259, compoundYield 77.5%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

To a solution of 6-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4H-1,3-benzodioxin-4-one (150 mg, 0.34 mmol) in anhydrous DCE (3 mL) were added 3-phenylpropionaldehyde (Aldrich, 75 μL, 0.51 mmol) and sodium triacetoxyborohydride (110 mg, 0.51 mmol). The reaction mixture was stirred at rt for 24 hrs. The solvent was removed under reduced pressure. The residue was taken up with an aqueous solution of NaOH (2 mL) and extracted with Et2O (6 ml). The organic layer was dried over Na2SO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (pentane/DCM (2/3)) gave 147 mg (77%) of the title compound as a yellow oil. HPLC, Rt: 6.3 min (purity: 99.1%). 1H NMR (CDCl3) δ: 7.45 (m, 4H), 7.32-7.15 (m, 10H), 6.91 (m, 1H), 6.80 (m, 1H), 4.49 (s, 2H), 3.42 (t, J=7.4 Hz, 2H), 2.65 (m, 4H), 1.71 (s, 6H), 1.61 (m, 2H), 1.37 (m, 2H), 0.94 (t, J=7.2 Hz, 3H)

Workup

  1. customThe solvent was removed under reduced pressure
  2. extractionextracted with Et2O (6 ml)
  3. dry with materialThe organic layer was dried over Na2SO4
  4. customthe solvent was removed under reduced pressure
  5. customPurification by flash chromatography on silicagel (pentane/DCM (2/3))

Sources & evidence

ORD record
ord-fee2ba4a8a5f4aef8b2286110b5d918a
Source dataset
uspto-grants-2011_05
Patent number
US07947851B2

Reaction notes

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