Acetic Anhydride → HCID 68411356, compound

HRID 2046804Notes

Reaction equation

HRID 2046804 reaction equation
[OH:1][CH:2]1[CH:7]([NH:8][C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])[CH:6]=[C:5]([C:16]2[CH:21]=[CH:20][N:19]=[CH:18][C:17]=2[N+:22]([O-:24])=[O:23])[CH2:4][CH:3]1[CH3:25].[CH3:26][C:27](OC(C)=O)=[O:28]>N1C=CC=CC=1>[C:27]([O:1][CH:2]1[CH:3]([CH3:25])[CH2:4][C:5]([C:16]2[CH:21]=[CH:20][N:19]=[CH:18][C:17]=2[N+:22]([O-:24])=[O:23])=[CH:6][CH:7]1[NH:8][C:9]([O:10][C:11]([CH3:12])([CH3:13])[CH3:14])=[O:15])(=[O:28])[CH3:26]

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 67135398Tert-butyl 6-hydroxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate

Product 1

HCID 68411356HCID 68411356, compoundYield 94%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a solution of (+/−)-tert-butyl 6-hydroxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate (1.0 equiv.) in pyridine (0.1 M) was added Ac2O (2.0 equiv.) and the reaction was stirred at room temperature overnight. Upon completion, the reaction was concentrated to dryness, then worked-up with ethyl acetate and water. The organic phase was dried with brine, then sodium sulfate, filtered, and concentrated to give (+/−)-2-(tert-butoxycarbonylamino)-6-methyl-4-(3-nitropyridin-4-yl)cyclohex-3-enyl acetate in 94% yield. LC/MS=392.2 (M+H), Rt=0.94 min.

Workup

  1. concentrationUpon completion, the reaction was concentrated to dryness
  2. dry with materialThe organic phase was dried with brine
  3. filtrationsodium sulfate, filtered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-6ae9ba5edeea4e968efa581aad8aa542
Source dataset
uspto-grants-2013_11
Patent number
US08592455B2

Reaction notes

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