Isopropylamine → 4-(3-Hydroxy-1-azetidinyl)-N-(1-methylethyl)benzamide

HRID 2363268Notes

Reaction equation

HRID 2363268 reaction equation
F[P-](F)(F)(F)(F)F.[N:8]1(O[P+](N(C)C)(N(C)C)N(C)C)[C:12]2[CH:13]=CC=C[C:11]=2N=N1.[OH:28][CH:29]1[CH2:32][N:31]([C:33]2[CH:41]=[CH:40][C:36]([C:37]([OH:39])=O)=[CH:35][CH:34]=2)[CH2:30]1.CC(N)C.C(N(CC)C(C)C)(C)C>C(Cl)Cl>[OH:28][CH:29]1[CH2:30][N:31]([C:33]2[CH:34]=[CH:35][C:36]([C:37]([NH:8][CH:12]([CH3:13])[CH3:11])=[O:39])=[CH:40][CH:41]=2)[CH2:32]1

Participants

6

Reactant 4

HCID 6363IsopropylamineHCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 83818271HCID 83818271, compound

Product 1

HCID 711435344-(3-Hydroxy-1-azetidinyl)-N-(1-methylethyl)benzamideYield 94.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (4.64 g, 10.5 mmol, Aldrich: Cat. #226084) was added to a mixture of 4-(3-hydroxyazetidin-1-yl)benzoic acid (1.93 g, 10.0 mmol), 2-propanamine (4.26 mL, 50.0 mmol) and N,N-diisopropylethylamine (3.88 g, 30.0 mmol) in dichloromethylene (10 mL). The mixture was stirred at room temperature for 2 hours, and diluted with DCM. The mixture was washed with aqueous NaHCO3 and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexane (gradient: 0-50%) to afford the desired product (2.21 g, 94.3%). LCMS (M+H)+: m/z—-235.1.

Workup

  1. washThe mixture was washed with aqueous NaHCO3 and brine
  2. dry with materialdried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexane (gradient: 0-50%)

Sources & evidence

ORD record
ord-5accbeb79aa24bec8d266b644116f735
Source dataset
uspto-grants-2014_04
Patent number
US08691807B2

Reaction notes

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