Diisopropylethylamine → tert-butyl N-[N-[3-(2,4,6-trimethylphenyl)propanoyl]carbamimidoyl]carbamate

HRID 873781Notes

Reaction equation

HRID 873781 reaction equation
[C:1]1([CH3:14])[CH:6]=[C:5]([CH3:7])[CH:4]=[C:3]([CH3:8])[C:2]=1[CH2:9][CH2:10][C:11]([OH:13])=O.C([N:18](C(C)C)CC)(C)C.N[N:25]([CH:33]=[NH:34])[C:26](=[O:32])[O:27][C:28]([CH3:31])([CH3:30])[CH3:29].O.ON1C2C=CC=CC=2N=N1.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1>CN(C)C=O.C(OCC)(=O)C>[NH:18]=[C:33]([NH:25][C:26](=[O:32])[O:27][C:28]([CH3:31])([CH3:30])[CH3:29])[NH:34][C:11](=[O:13])[CH2:10][CH2:9][C:2]1[C:1]([CH3:14])=[CH:6][C:5]([CH3:7])=[CH:4][C:3]=1[CH3:8]

Participants

8

Reactant 5

HCID 81531DiisopropylethylamineHCID 2325363-(2,4,6-Trimethylphenyl)propanoic acidHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 27960291-Hydroxybenzotriazole hydrateHCID 86691067Tert-butyl amino(imino)methylcarbamate

Product 1

HCID 149434104tert-butyl N-[N-[3-(2,4,6-trimethylphenyl)propanoyl]carbamimidoyl]carbamateYield 93%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

3-Mesitylpropionic acid (4.40 g; 23 mmol), diisopropylethylamine (14.8 g; 115 mmol), tert-butyl amino(imino)methylcarbamate (4.40 g; 28 mmol), and 1-hydroxybenzotriazole monohydrate (4.22 g; 28 mmol) were dissolved in N,N-dimethylformamide (92 mL), 2-(1H)-benzotriazol-1-yl-1,1,3,3-tetramethyluronium hexafluorophosphate (10.5 g; 28 mmol) was added thereto, and the mixture was stirred for 17 hours at room temperature. To the reaction solution, ethyl acetate (300 mL) was added, and the mixture was washed with 10% aqueous citric acid solution, brine, saturated aqueous sodium bicarbonate solution, and then brine. The organic layer was dried over anhydrous magnesium sulfate and then distilled under reduced pressure. The resulting oily substance was crystallized from diethyl ether/diisopropyl ether, collected by filtration and dried to give 7.10 g of the title compound (yield 93%).

Workup

  1. washthe mixture was washed with 10% aqueous citric acid solution, brine, saturated aqueous sodium bicarbonate solution
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. distillationdistilled under reduced pressure
  4. customThe resulting oily substance was crystallized from diethyl ether/diisopropyl ether
  5. filtrationcollected by filtration
  6. customdried

Sources & evidence

ORD record
ord-7d97125c53b141c69e8201dc366f5e1c
Source dataset
uspto-grants-2015_03
Patent number
US08975411B2

Reaction notes

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