Methanamine, N-methoxy-, hydrochloride (1:1) → Tert-butyl 2-(methoxy(methyl)carbamoyl)morpholine-4-carboxylate

HRID 2355399Notes

Reaction equation

HRID 2355399 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][O:11][CH:10]([C:14]([OH:16])=O)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.[CH3:18][NH:19][O:20][CH3:21].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C(Cl)Cl.CCOCC>[CH3:21][O:20][N:19]([CH3:18])[C:14]([CH:10]1[O:11][CH2:12][CH2:13][N:8]([C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])[CH2:9]1)=[O:16]

Participants

7

Reactant 4

HCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 81531DiisopropylethylamineHCID 27559654-((Tert-butoxy)carbonyl)morpholine-2-carboxylic acidHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

Product 1

HCID 57449675Tert-butyl 2-(methoxy(methyl)carbamoyl)morpholine-4-carboxylate

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of (±)-4-(tert-butoxycarbonyl)morpholine-2-carboxylic acid (1.51 g, 6.53 mmol), N,O-dimethylhydroxylamine hydrochloride (0.83 g, 8.49 mmol) and i-Pr2NEt (3.1 mL, 17.6 mmol) in CH2Cl2 (30 mL) was added solid HATU (3.01 g, 7.85 mmol). The mixture was stirred at rt for 3 d, diluted with ether (175 mL), washed with 5% aq HCl (2×50 mL) and satd aq NaHCO3 (50 mL) and dried over MgSO4. Removal of the solvent left (±)-tert-butyl 2-(methoxy(methyl)carbamoyl)morpholine-4-carboxylate (1.73 g, 96%) as an oil.

Workup

  1. washwashed with 5% aq HCl (2×50 mL)
  2. dry with materialdried over MgSO4
  3. customRemoval of the solvent
  4. waitleft (±)-tert-butyl 2-(methoxy(methyl)carbamoyl)morpholine-4-carboxylate (1.73 g, 96%) as an oil

Sources & evidence

ORD record
ord-ce1eb844de0f425bb489551ea2bb23db
Source dataset
uspto-grants-2010_07
Patent number
US07754737B2

Reaction notes

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