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Water → 3-(4-(1-(2(S),3-Dihydroxypropanoyl)-1,2,5,6-tetrahydropyrid-4-yl)-3,5-difluorophenyl)-5(S)-pyrazin-2-ylaminomethyloxazolidin-2-one

HRID 1582361
Notes
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Reaction equation

HRID 1582361 reaction equation
CC1(C)[O:6][C@H:5]([C:7]([N:9]2[CH2:14][CH2:13][C:12]([C:15]3[C:20]([F:21])=[CH:19][C:18]([N:22]4[CH2:26][C@H:25]([CH2:27][N:28]([C:36]5[CH:41]=[N:40][CH:39]=[CH:38][N:37]=5)C(OC(C)(C)C)=O)[O:24][C:23]4=[O:42])=[CH:17][C:16]=3[F:43])=[CH:11][CH2:10]2)=[O:8])[CH2:4][O:3]1.FC(F)(F)C(O)=O.O>ClCCl>[OH:6][C@@H:5]([CH2:4][OH:3])[C:7]([N:9]1[CH2:14][CH2:13][C:12]([C:15]2[C:20]([F:21])=[CH:19][C:18]([N:22]3[CH2:26][C@H:25]([CH2:27][NH:28][C:36]4[CH:41]=[N:40][CH:39]=[CH:38][N:37]=4)[O:24][C:23]3=[O:42])=[CH:17][C:16]=2[F:43])=[CH:11][CH2:10]1)=[O:8]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 962WaterHCID 6422Trifluoroacetic acidHCID 695849013-(4-(1-(2,2-Dimethyl-1,3-dioxolan-4(S)-ylcarbonyl)-1,2,5,6-tetrahydropyrid-4-yl)-3,5-difluorophenyl)-5(R)-(N-(t-butoxycarbonyl)pyrazin-2-ylaminomethyl)oxazolidin-2-one

Product 1

HCID 207256613-(4-(1-(2(S),3-Dihydroxypropanoyl)-1,2,5,6-tetrahydropyrid-4-yl)-3,5-difluorophenyl)-5(S)-pyrazin-2-ylaminomethyloxazolidin-2-oneYield 102%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

3-(4-(1-(2,2-Dimethyl-1,3-dioxolan-4(S)-ylcarbonyl)-1,2,5,6-tetrahydropyrid-4-yl)-3,5-difluorophenyl)-5(R)-(N-(t-butoxycarbonyl)pyrazin-2-ylaminomethyl)oxazolidin-2-one (400 mg, 0.65 mM) was dissolved in dichloromethane (4 ml) and treated with trifluoroacetic acid (4 ml) at ambient temperature. After stirring for 30 minutes at ambient temperature, water (0.8 ml) was added, and stirring continued for 2 hours. Solvent was removed, the residue dissolved in methanol (20 ml), and treated with aqueous ammonia to bring the pH to 8; solvent was removed, and the residue chromatographed on a 10 g silica Mega Bond Elut® column, eluting with a gradient increasing in polarity from 5 to 10% methanol in dichloromethane. Relevant fractions were combined and evaporated to give the desired product (315 mg ). NMR (DMSO-d6) δ: 2.28 (br, 1H); 2.37 (br, 1H); 3.46 (m, 1H); 3.54 (m, 1H); 3.64 (t, 2H); 3.71 (m, 1H); 3.81 (dd, 1H); 4.10 (overlapping m, 4H); 4.36 (m, 1H); 4.71 (t, 1H); 4.89 (m, 1H); 5.01 (t, 1H); 5.85 (s, 1H); 7.32 (d, 2H); 7.43 (t, 1H); 7.70 (d, 1H); 1H); 7.99 (s, 1H). MS (ESP): 476 (MH+) for C22H23F2N5O5

Workup

  1. stirringstirring
  2. waitcontinued for 2 hours
  3. customSolvent was removed
  4. dissolutionthe residue dissolved in methanol (20 ml)
  5. additiontreated with aqueous ammonia
  6. customsolvent was removed
  7. customthe residue chromatographed on a 10 g silica Mega Bond Elut® column
  8. washeluting with
  9. temperaturea gradient increasing in polarity from 5 to 10% methanol in dichloromethane
  10. customevaporated

Sources & evidence

ORD record
ord-df0ffe7eb9844b06bb44d9f544594e10
Source dataset
uspto-grants-2004_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06734200B1

Reaction notes

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