Triethylamine → HCID 22619377, compound

HRID 840431Notes

Reaction equation

HRID 840431 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]#[N:10])=[CH:4][CH:3]=1.[C:11]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])(=[O:14])[CH:12]=[CH2:13].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(N(CC)CC)C>C(OCC)(=O)C.C([O-])(=O)C.C([O-])(=O)C.[Pd+2]>[C:9]([CH2:8][C:5]1[CH:6]=[CH:7][C:2]([C:12](=[CH2:13])[C:11]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])=[CH:3][CH:4]=1)#[N:10]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 15458tert-Butyl acrylateHCID 27914Benzeneacetonitrile, 4-bromo-HCID 80271Tri-o-tolylphosphine

Product 1

HCID 22619377HCID 22619377, compound

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 5 g of p-bromophenylacetonitrile, 4.6 ml of t-butyl acrylate, 57 mg of palladium diacetate, 310 mg of tri-o-tolylphosphine and 12 ml of triethylamine is refluxed for 5 hours. The reaction mixture is diluted with ethyl acetate and washed with 10% HCl and saturated sodium bicarbonate solution. After drying over magnesium sulfate the solvent is removed in vacuo to yield t-butyl p-(cyanomethyl)-phenylacrylate. This material is dissolved in ethanol and hydrogenated over 1.1 g of 10% palladium on carbon catalyst for 3 days at 3 atmospheres pressure of hydrogen. After filtration the solvent is removed in vacuo and the residue is chromatagraphed on silica gel with ether/hexane (1:1) as the eluent to afford p-(2-t-butoxycarbonyl-ethyl)-phenyl-acetonitrile; 2.8 g of this material is dissolved in 90 ml of tetrahydrofuran and 50 ml of methanol and to this is added 6.2 g of cobalt chloride in 90 ml of water followed by 2.1 g of sodium borohydride in small portions. After filtration and removal of solvent, the residue is chromatagraphed on silica gel with 7.5% ammonia saturated methanol in methylene chloride as the eluent to afford p-(2-t-butoxy-carbonyl-ethyl)-2-phenethylamine as an oil.

Workup

  1. temperatureis refluxed for 5 hours
  2. washwashed with 10% HCl and saturated sodium bicarbonate solution
  3. dry with materialAfter drying over magnesium sulfate the solvent
  4. customis removed in vacuo

Sources & evidence

ORD record
ord-abc0e25b904e4a48909c3de14321837c
Source dataset
uspto-grants-2002_04
Patent number
US06368573B1

Reaction notes

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