1-Benzoyl-2-isopropylhydrazine → HCID 58689902, compound

HRID 2250893Notes

Reaction equation

HRID 2250893 reaction equation
[Br:1][C:2]1[CH:12]=[C:11]([CH3:13])[CH:10]=[CH:9][C:3]=1[O:4][CH2:5][C:6]([OH:8])=O.[CH:14]([NH:17][NH:18][C:19](=[O:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)([CH3:16])[CH3:15].C(N(C(C)C)CC)(C)C.C1CN([P+](Br)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F>CN(C=O)C>[Br:1][C:2]1[CH:12]=[C:11]([CH3:13])[CH:10]=[CH:9][C:3]=1[O:4][CH2:5][C:6]([N:17]([CH:14]([CH3:16])[CH3:15])[NH:18][C:19](=[O:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)=[O:8]

Participants

6

Reactant 4

HCID 188691-Benzoyl-2-isopropylhydrazineHCID 81531DiisopropylethylamineHCID 334083(2-bromo-4-methylphenoxy)acetic acidHCID 2733179PyBroP

Product 1

HCID 58689902HCID 58689902, compoundYield 34.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of (2-bromo-4-methyl-phenoxy)-acetic acid (879 mg, 3.34 mmol) and benzoic acid N′-isopropyl-hydrazide (714 mg, 4.00 mmol) in DMF (20 mL) was treated with diisopropylethyl amine (1.45 ml, 8.35 mmol) and PyBroP (2.33 g, 5.01 mmol) at room temperature overnight. The reaction mixture was partitioned between 1N HCl and ethyl acetate. The organic layer was successively washed with saturated sodium bicarbonate and brine, then dried over sodium sulfate, filtered and concentrated. The crude was absorbed on silica and purified on a silica gel column with a 20-30% ethyl acetate/hexanes gradient to afford the product as a white solid (463 mg, 34%).

Workup

  1. customThe reaction mixture was partitioned between 1N HCl and ethyl acetate
  2. washThe organic layer was successively washed with saturated sodium bicarbonate and brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude was absorbed on silica
  7. custompurified on a silica gel column with a 20-30% ethyl acetate/hexanes gradient

Sources & evidence

ORD record
ord-f64f8ca5c0ca41b29bf229600f1c5a6c
Source dataset
uspto-grants-2008_01
Patent number
US07317125B2

Reaction notes

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