Methanamine, N-methoxy-, hydrochloride (1:1) → 3-tert-Butyl-N-methoxy-N-methyl-5-[3-(tetrahydropyran-2-yloxy)propoxy]benzamide

HRID 657989Notes

Reaction equation

HRID 657989 reaction equation
[C:1]([C:5]1[CH:6]=[C:7]([CH:11]=[C:12]([O:14][CH2:15][CH2:16][CH2:17][O:18][CH:19]2[CH2:24][CH2:23][CH2:22][CH2:21][O:20]2)[CH:13]=1)[C:8]([OH:10])=O)([CH3:4])([CH3:3])[CH3:2].Cl.[CH3:26][NH:27][O:28][CH3:29].CCN(C(C)C)C(C)C.[B-](F)(F)(F)F.CCOC(C(C#N)=NOC(N(C)C)=[N+](C)C)=O>CN(C=O)C>[C:1]([C:5]1[CH:6]=[C:7]([CH:11]=[C:12]([O:14][CH2:15][CH2:16][CH2:17][O:18][CH:19]2[CH2:24][CH2:23][CH2:22][CH2:21][O:20]2)[CH:13]=1)[C:8]([N:27]([O:28][CH3:29])[CH3:26])=[O:10])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 81531DiisopropylethylamineHCID 2733286O-[(Ethoxycarbonyl)cyanomethylenamino]-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 581368323-tert-Butyl-5-[3-(tetrahydropyran-2-yloxy)propoxy]benzoic acid

Product 1

HCID 581369583-tert-Butyl-N-methoxy-N-methyl-5-[3-(tetrahydropyran-2-yloxy)propoxy]benzamideYield 99.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

3-tert-Butyl-5-[3-(tetrahydropyran-2-yloxy)propoxy]benzoic acid (O4.059; 4.90 g) and N,O-dimethylhydroxylamine hydrochloride (1.42 g) were dissolved in DMF (80 ml) and admixed with Hünig's base (4.81 ml) and TOTU (4.78 g). After stirring for 2 h, the mixture was left to stand overnight. Then the DMF was drawn off, the mixture was partitioned between EA and saturated sodium hydrogencarbonate solution, and the EA phase was removed, dried over magnesium sulfate, filtered and concentrated. 5.49 g of the title compound were obtained.

Workup

  1. waitthe mixture was left
  2. waitto stand overnight
  3. customthe mixture was partitioned between EA and saturated sodium hydrogencarbonate solution
  4. customthe EA phase was removed
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-a2a3d3772d4e40e490725763def3447c
Source dataset
uspto-grants-2011_12
Patent number
US08076336B2

Reaction notes

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