Methanesulfonyl chloride → (6-(Tert-butoxycarbonylamino)pyridin-2-yl)methyl methanesulfonate

HRID 876555Notes

Reaction equation

HRID 876555 reaction equation
[OH:1][CH2:2][C:3]1[N:8]=[C:7]([NH:9][C:10](=[O:16])[O:11][C:12]([CH3:15])([CH3:14])[CH3:13])[CH:6]=[CH:5][CH:4]=1.C(N(C(C)C)CC)(C)C.[CH3:26][S:27](Cl)(=[O:29])=[O:28]>C(#N)C>[CH3:26][S:27]([O:1][CH2:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]([NH:9][C:10]([O:11][C:12]([CH3:13])([CH3:15])[CH3:14])=[O:16])[N:8]=1)(=[O:29])=[O:28]

Participants

5

Reactant 3

HCID 31297Methanesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 19349090Tert-butyl (6-(hydroxymethyl)pyridin-2-yl)carbamate

Product 1

HCID 19349110(6-(Tert-butoxycarbonylamino)pyridin-2-yl)methyl methanesulfonate

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a solution of tert-butyl 6-(hydroxymethyl)pyridin-2-ylcarbamate 80 (3.0 g, 13.4 mmol) and diisopropylethylamine (5.0 g, 40 mmol) in acetonitrile (30 mL) was added methanesulfonyl chloride (2.0 g, 17.4 mmol) over a period of 30 min at 0° C. and the mixture was stirred for 2 h at room temperature. The reaction was quenched by adding saturated aqueous NaHCO3 and extracted with ethyl acetate (3×60 mL). The combined organic layers were washed with brine, dried (Na2SO4) and concentrated under reduced pressure to afford quantitative yield of crude 81.

Workup

  1. customThe reaction was quenched
  2. additionby adding saturated aqueous NaHCO3
  3. extractionextracted with ethyl acetate (3×60 mL)
  4. washThe combined organic layers were washed with brine
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated under reduced pressure
  7. customto afford quantitative yield of crude 81

Sources & evidence

ORD record
ord-308fc6af2dc44dde99f18def354bb9ad
Source dataset
uspto-grants-2015_03
Patent number
US08987258B2

Reaction notes

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