4-Aminobenzoic Acid → HCID 57732251, compound

HRID 401831Notes

Reaction equation

HRID 401831 reaction equation
[NH2:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=O)=[CH:4][CH:3]=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CN(C=O)C.C(N(CC)C(C)C)(C)C.[F:49][C:50]([F:60])([F:59])[C:51]1[CH:58]=[CH:57][C:54]([CH2:55][NH2:56])=[CH:53][CH:52]=1>>[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([C:6]([NH:56][CH2:55][C:54]2[CH:53]=[CH:52][C:51]([C:50]([F:49])([F:59])[F:60])=[CH:58][CH:57]=2)=[O:8])=[CH:9][CH:10]=1

Participants

6

Reactant 5

HCID 9784-Aminobenzoic AcidHCID 6228DimethylformamideHCID 768044-(Trifluoromethyl)benzylamineHCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

Product 1

HCID 57732251HCID 57732251, compound

Procedure

To a mixture of p-aminobenzoic acid (5.0 g, 36 mmol) and HBTU (14 g, 36 mmol) in DMF (50 mL, 600 mmol) at 0° C. were added N,N-diisopropylethylamine (19 mL, 110 mmol) and 4-(trifluoromethyl)benzylamine (6.2 mL, 44 mmol). The reaction mixture was slowly warmed to ambient temperature. The reaction mixture was quenched with an equal volume of saturated aqueous sodium bicarbonate and extracted with ethyl acetate (3×). The combined organic layers were washed successively with water, aqueous lithium chloride, and brine, dried over sodium sulfate, filtered and concentrated in vacuo (8.2 g, 70%).

Workup

  1. customThe reaction mixture was quenched with an equal volume of saturated aqueous sodium bicarbonate
  2. extractionextracted with ethyl acetate (3×)
  3. washThe combined organic layers were washed successively with water, aqueous lithium chloride, and brine
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo (8.2 g, 70%)

Sources & evidence

ORD record
ord-2e0b1bc938044c2ea1181de35b5d19bc
Source dataset
uspto-grants-2014_06
Patent number
US08741934B2

Reaction notes

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