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Methanesulfonyl chloride → 3-(4-[(3-Chloro-4-fluorophenyl)amino]carbonyl-1,2,5-oxadiazol-3-yl)propyl methanesulfonate

HRID 2097660
Notes
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Reaction equation

HRID 2097660 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([NH:9][C:10]([C:12]2[C:16]([CH2:17][CH2:18][CH2:19][OH:20])=[N:15][O:14][N:13]=2)=[O:11])[CH:5]=[CH:6][C:7]=1[F:8].[CH3:21][S:22](Cl)(=[O:24])=[O:23]>C(Cl)Cl>[CH3:21][S:22]([O:20][CH2:19][CH2:18][CH2:17][C:16]1[C:12]([C:10]([NH:9][C:4]2[CH:5]=[CH:6][C:7]([F:8])=[C:2]([Cl:1])[CH:3]=2)=[O:11])=[N:13][O:14][N:15]=1)(=[O:24])=[O:23]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 31297Methanesulfonyl chlorideHCID 58941800N-(3-chloro-4-fluorophenyl)-4-(3-hydroxypropyl)-1,2,5-oxadiazole-3-carboxamide

Product 1

HCID 589417693-(4-[(3-Chloro-4-fluorophenyl)amino]carbonyl-1,2,5-oxadiazol-3-yl)propyl methanesulfonateYield 80%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

N-(3-Chloro-4-fluorophenyl)-4-(3-hydroxypropyl)-1,2,5-oxadiazole-3-carboxamide (60 mg, 0.20 mmol) was dissolved in anhydrous DCM (2 mL), followed by addition of TEA (57 μL, 0.41 mmol). The reaction was stirred and cooled to 0° C., and methanesulfonyl chloride (29 μL, 0.37 mmol) was added drop-wise. The reaction was quenched with water and diluted with DCM. The organic layer was separated, dried over Na2SO4, filtered, concentrated and purified by silica gel chromatography (25%-75% EtOAc/hexane) to give the desired product (60 mg, 80%). LCMS for C13H14ClFN3O5S(M+H)+: m/z=378.

Workup

  1. customThe reaction was quenched with water
  2. additiondiluted with DCM
  3. customThe organic layer was separated
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. custompurified by silica gel chromatography (25%-75% EtOAc/hexane)

Sources & evidence

ORD record
ord-87d68ea9bd914e32800785c5611bf683
Source dataset
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08450351B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes