Methyl N-(triethylammoniosulfonyl)carbamate → HCID 86649759, compound

HRID 1640744Notes

Reaction equation

HRID 1640744 reaction equation
[C:1]([NH:4][NH:5][C:6](=[O:31])[CH2:7][CH2:8][C@@:9]1([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[O:14][C:13](=[O:15])[N:12]([C@H](C2C=CC(Br)=CC=2)C)[CH2:11][CH2:10]1)(=O)[CH3:2].CC[N+](S(N=C(OC)[O-])(=O)=O)(CC)CC>C1COCC1>[CH3:2][C:1]1[O:31][C:6]([CH2:7][CH2:8][C:9]2([C:25]3[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=3)[O:14][C:13](=[O:15])[NH:12][CH2:11][CH2:10]2)=[N:5][N:4]=1

Participants

4

Reactant 2

HCID 2724994Methyl N-(triethylammoniosulfonyl)carbamateHCID 59635656HCID 59635656, compound

Product 1

HCID 86649759HCID 86649759, compoundYield 96.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of N′-acetyl-3-((R)-3-((S)-1-(4-bromophenyl)ethyl)-2-oxo-6-phenyl-1,3-oxazinan-6-yl)propanehydrazide (0.1 g, 0.21 mmol) in THF (2 mL) was added Burgess Reagent (75 mg, 0.315 mmol). The sealed vial was irradiated in the microwave at 100° C. for 15 min. The mixture was extracted with EtOAc (3×30 mL). The combined organic layer was washed with brine (50 mL), dried over Na2SO4, filtered, and concentrated. The residue was purified by preparative TLC to afford (R)-3-(S)-1-(4-bromophenyl)ethyl)-6-(2-(5-methyl-1,3,4-oxadiazol-2-yl)ethyl)-6-phenyl -1,3-oxazinan-2-one (58 mg, yield: 59%). 1H NMR (CDCl3): δ1.49-1.51 (m, 3H), 2.23-2.26 (m, 2H), 2.30-2.33 (m, 2H), 2.42 (s, 3H), 2.43-2.45 (m, 1H), 2.49-2.54 (m, 1H), 2.87-2.91 (m, 1H), 3.06-3.09 (m, 1H), 5.61-5.63 (m, 1H), 6.76-6.78 (d, 2H), 7.20-7.22 (m, 2H), 7.26-7.33 (m, 2H), 7.35-7.37 (m, 3H).

Workup

  1. customThe sealed vial was irradiated in the microwave at 100° C. for 15 min
  2. extractionThe mixture was extracted with EtOAc (3×30 mL)
  3. washThe combined organic layer was washed with brine (50 mL)
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by preparative TLC

Sources & evidence

ORD record
ord-a948bddfbbab4c6abf5904995b96eb79
Source dataset
uspto-grants-2012_02
Patent number
US08114868B2

Reaction notes

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