1,2-Dichloroethane → Tert-butyl {2-[(2-amino-3,4-difluorophenyl)amino]-2-oxoethyl}carbamate

HRID 908244Notes

Reaction equation

HRID 908244 reaction equation
[C:1]([O:5][C:6]([NH:8][CH2:9][C:10]([OH:12])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1.[F:27][C:28]1[C:33]([F:34])=[CH:32][CH:31]=[C:30]([NH2:35])[C:29]=1[NH2:36].C(N(CC)C(C)C)(C)C>CN(C=O)C>[NH2:36][C:29]1[C:28]([F:27])=[C:33]([F:34])[CH:32]=[CH:31][C:30]=1[NH:35][C:10](=[O:12])[CH2:9][NH:8][C:6](=[O:7])[O:5][C:1]([CH3:2])([CH3:3])[CH3:4]

Participants

7

Reactant 5

HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 78288N-(tert-butoxycarbonyl)glycineHCID 81531DiisopropylethylamineHCID 27367533,4-Difluorobenzene-1,2-diamine

Product 1

HCID 58024790Tert-butyl {2-[(2-amino-3,4-difluorophenyl)amino]-2-oxoethyl}carbamate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a 130 mL DMF solution of [(tert-butoxycarbonyl)amino]acetic acid (14.1 g, 80.4 mmol) were added EDC (18.8 g, 96.2 mmol), HOBt (13.1 g, 96.2 mmol), 3,4-difluoro-benzene-1,2-diamine (11.2 g, 77.7 mmol) and N,N-diisopropylethylamine (27.1 mL, 156 mmol). The reaction mixture was stirred at room temperature for 6 hr. The resulting suspension was filtered and the filtrate was diluted with EtOAc, washed with sat. ammonium chloride aq., sat. sodium bicarbonate aq. and brine, dried over anhydrous Na2SO4 filtered and concentrated to give the title compound as crude solid product (24 g). LC/MS: m/z 302(M+H).

Workup

  1. filtrationThe resulting suspension was filtered
  2. additionthe filtrate was diluted with EtOAc
  3. washwashed with sat. ammonium chloride aq., sat. sodium bicarbonate aq. and brine
  4. dry with materialdried over anhydrous Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-bf3bd96ba15c4a6d82fb927871de96ef
Source dataset
uspto-grants-2011_09
Patent number
US08017605B2

Reaction notes

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