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Sodium Bicarbonate → [(3R,4R,7R)-3-Hydroxy-7-methyl-1-(pyridine-2-sulfonyl)-azepan-4-yl]-carbamic acid tert-butyl ester

HRID 1790657
Notes
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Reaction equation

HRID 1790657 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[S:7](Cl)(=[O:9])=[O:8].[C:11]([O:15][C:16](=[O:27])[NH:17][C@@H:18]1[CH2:24][CH2:23][C@@H:22]([CH3:25])[NH:21][CH2:20][C@H:19]1[OH:26])([CH3:14])([CH3:13])[CH3:12].C(=O)(O)[O-].[Na+]>C(Cl)Cl.O.CCOC(C)=O>[C:11]([O:15][C:16](=[O:27])[NH:17][C@@H:18]1[CH2:24][CH2:23][C@@H:22]([CH3:25])[N:21]([S:7]([C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][N:1]=2)(=[O:9])=[O:8])[CH2:20][C@H:19]1[OH:26])([CH3:13])([CH3:12])[CH3:14]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 516892Sodium BicarbonateHCID 3787675Pyridine-2-sulfonyl ChlorideHCID 68998497((3R,4R,7R)-3-Hydroxy-7-methyl-azepan-4-yl)-carbamic acid tert-butyl ester

Product 1

HCID 69000299[(3R,4R,7R)-3-Hydroxy-7-methyl-1-(pyridine-2-sulfonyl)-azepan-4-yl]-carbamic acid tert-butyl esterYield 65.6%

Reagents, catalysts & solvents 3

HCID 962
Water
Solvent
HCID 6344DichloromethaneSolvent
HCID 8857Ethyl AcetateSolvent

Procedure

Pyridine-2-sulfonyl chloride (0.55 g, 3.1 mmol) was added to a solution ((3R,4R,7R)-3-Hydroxy-7-methyl-azepan-4-yl)-carbamic acid tert-butyl ester (0.58 g, 0.2.4 mmol), sodium bicarbonate (0.84 g, 10 mmol) in CH2Cl2 (10 ml) and H2O (3 ml) and was stirred at RT for 30 minutes. The reaction mixture was diluted with EtOAc (100 ml), washed with H2O, brine, dried with magnesium sulfate, filtered, concentrated in vacuo by rotary evaporation, and chromatographed (silica gel, 45:55 EtOAC/hexanes) to yield the title compound (0.6 g, 65%): Electrospray mass spec: M+H+=386.27.

Workup

  1. washwashed with H2O, brine
  2. dry with materialdried with magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo by rotary evaporation
  5. customchromatographed (silica gel, 45:55 EtOAC/hexanes)

Sources & evidence

ORD record
ord-7eabce3c0fd649deb1c2ee99f6f93d3e
Source dataset
uspto-grants-2006_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07071184B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes