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Potassium Carbonate → rel-(2R,5R)-5-(5-Bromo-2-fluorophenyl)-2,5-dimethyl-2-(trifluoromethyl)-5,6-dihydro-2H-1,4-oxazin-3-amine

HRID 81579
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HRID 81579 반응식
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([F:33])=[C:6]([C@:8]([NH:20]S(C2C=CC=CC=2[N+]([O-])=O)(=O)=O)([CH3:19])[CH2:9][O:10][C@@:11]([C:17]#[N:18])([CH3:16])[C:12]([F:15])([F:14])[F:13])[CH:7]=1.C(N[C@H](C(O)=O)CS)(=O)C.C([O-])([O-])=O.[K+].[K+]>CO>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([F:33])=[C:6]([C@:8]2([CH3:19])[CH2:9][O:10][C@@:11]([CH3:16])([C:12]([F:15])([F:14])[F:13])[C:17]([NH2:18])=[N:20]2)[CH:7]=1
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참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 12035N-Acetyl-L-CysteineHCID 66665422N-[(R)-1-(5-bromo-2-fluoro-phenyl)-2-((R)-1-cyano-2,2,2-trifluoro-1-methyl-ethoxy)-1-methyl-ethyl]-2-nitro-benzenesulfonamide

생성물 1

HCID 66666066rel-(2R,5R)-5-(5-Bromo-2-fluorophenyl)-2,5-dimethyl-2-(trifluoromethyl)-5,6-dihydro-2H-1,4-oxazin-3-amine

시약·촉매·용매 1

HCID 887
Methanol
용매

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온도
80 °C

실험 절차

To a solution of N—[(R)-1-(5-bromo-2-fluoro-phenyl)-2-((R)-1-cyano-2,2,2-trifluoro-1-methyl-ethoxy)-1-methyl-ethyl]-2-nitro-benzenesulfonamide (6.54 g, 11.8 mmol) and N-acetyl-cysteine (2.4 g, 26.0 mmol) in MeOH (80 ml) was added K2CO3 (3.62 g, 26.0 mmol) and the reaction mixture was heated at 80° C. for 16 h. After removal of the solvent the residue was dissolved in water and extracted with EtOAc. Combined extracts were washed with saturated NaHCO3 solution and brine, dried over MgSO4, filtered and concentrated to provide the title compound after chromatographic purification over silica gel (hexane-EtOAc 10:1 to 1:2 containing 0.03% NEt3) as a yellow oil: TLC (hexane-EtOAc 1:1): Rf=0.58; HPLC RH5=0.843 min; ESIMS: 369, 371 [(M+H)+]; 1H NMR (360 MHz, CDCl3): δ 7.66 (dd, 1H), 7.35 (m, 1H), 6.91 (dd, 1H), 3.97 (m, 2H), 1.53 (s, 3H), 1.49 (s, 3H).

후처리

  1. customAfter removal of the solvent the residue
  2. dissolutionwas dissolved in water
  3. extractionextracted with EtOAc
  4. washCombined extracts were washed with saturated NaHCO3 solution and brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated

출처 및 근거

ORD 기록
ord-02dbbdb2f0ca4c84ae35ba259621b78e
출처 데이터셋
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08846658B2

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