Diisopropylethylamine → HCID 67432873, compound

HRID 410526Notes

Reaction equation

HRID 410526 reaction equation
Cl.[NH2:2][CH2:3][C:4]([C:6]1[CH:11]=[CH:10][CH:9]=[C:8]([N+:12]([O-:14])=[O:13])[CH:7]=1)=[O:5].[Si:15]([O:32][CH2:33][C:34]([CH3:39])([CH3:38])[C:35](O)=[O:36])([C:28]([CH3:31])([CH3:30])[CH3:29])([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C=O)C.C(OCC)(=O)C>[Si:15]([O:32][CH2:33][C:34]([CH3:39])([CH3:38])[C:35]([NH:2][CH2:3][C:4]([C:6]1[CH:11]=[CH:10][CH:9]=[C:8]([N+:12]([O-:14])=[O:13])[CH:7]=1)=[O:5])=[O:36])([C:28]([CH3:30])([CH3:31])[CH3:29])([C:22]1[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=1)[C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 27743743-Nitrophenacylamine hydrochlorideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 16067172HCID 16067172, compound

Product 1

HCID 67432873HCID 67432873, compoundYield 95%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 2-amino-1-(3-nitrophenyl)ethanone HCl salt (300 mg, 1.38 mmol) and 3-{[tert-butyl(diphenyl)silyl]oxy}-2,2-dimethylpropanoic acid (543 mg, 1.52 mmol) in DMF (1.3 mL) was added HATU (579 mg, 1.52 mmol) and the mixture was cooled to 0° C. Hunig's base (726 μL, 4.15 mmol) was added, and the mixture was stirred for two hours at this temperature. The mixture was diluted with ethyl acetate (30 mL), then washed with 1:1 water:saturated NaHCO3(aq) (30 mL) and 1:1 water:brine (2×30 mL). The aqueous fractions were further extracted with ethyl acetate (30 mL), then the combined organic extracts were dried (Na2SO4) and concentrated in vacuo. Purification by chromatography on silica gel (100:0 to 50:50, hexanes:ethyl acetate) provided 680 mg of 3-{[tert-butyl(diphenyl)silyl]oxy}-2,2-dimethyl-N-[2-(3-nitrophenyl)-2-oxoethyl]propanamide (1.31 mmol, 95%) as a white solid.

Workup

  1. washwashed with 1:1 water
  2. extractionThe aqueous fractions were further extracted with ethyl acetate (30 mL)
  3. dry with materialthe combined organic extracts were dried (Na2SO4)
  4. concentrationconcentrated in vacuo
  5. customPurification by chromatography on silica gel (100:0 to 50:50, hexanes:ethyl acetate)

Sources & evidence

ORD record
ord-4802c6b310be42879897a2e940a60f73
Source dataset
uspto-grants-2014_06
Patent number
US08759366B2

Reaction notes

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