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Acetic Acid → Methyl 1-{2-[3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-5-fluoro-2-(methyloxy)phenyl]ethyl}-3-azetidinecarboxylate

HRID 1942653
Notes
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Reaction equation

HRID 1942653 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[S:13][C:14]([C:17]3[C:18]([O:27][CH3:28])=[C:19]([CH2:24][CH:25]=O)[CH:20]=[C:21]([F:23])[CH:22]=3)=[CH:15][N:16]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:11])[CH3:10].C(O)(=O)C.C([O-])(=O)C.[Na+].[NH:38]1[CH2:41][CH:40]([C:42]([O:44][CH3:45])=[O:43])[CH2:39]1>C(O)C>[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[S:13][C:14]([C:17]3[C:18]([O:27][CH3:28])=[C:19]([CH2:24][CH2:25][N:38]4[CH2:41][CH:40]([C:42]([O:44][CH3:45])=[O:43])[CH2:39]4)[CH:20]=[C:21]([F:23])[CH:22]=3)=[CH:15][N:16]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:10])[CH3:11]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 517045Sodium AcetateHCID 20132751Methyl azetidine-3-carboxylateHCID 58494083[3-(2-{3-Chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-5-fluoro-2-(methyloxy)phenyl]acetaldehyde

Product 1

HCID 58494059Methyl 1-{2-[3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-5-fluoro-2-(methyloxy)phenyl]ethyl}-3-azetidinecarboxylate
Yield 85.2%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of [3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-5-fluoro-2-(methyloxy)phenyl]acetaldehyde (D80) (95 mg), acetic acid (0.044 mL) and sodium acetate (113 mg) in ethanol (20.00 mL) stirred under nitrogen at room temperature was added methyl 3-azetidinecarboxylate (106 mg) in one charge. The reaction mixture was stirred at room temperature for 1 h, then the solvent was evaporated in vacuo. The residue was dissolved in dichloromethane (DCM) (20 mL), sodium triacetoxyborohydride (195 mg) was added to the mixture. The reaction mixture was stirred at room temperature overnight. The reaction mixture was partitioned between ethyl acetate (100 mL) and saturated brine (30 mL). The organic phase was dried over sodium sulphate and evaporated in vacuo to give the crude product methyl 1-{2-[3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-5-fluoro-2-(methyloxy)phenyl]ethyl}-3-azetidinecarboxylate (D82) (100 mg). The crude product was used for next step without further purification. MS (ES): C26H28ClFN2O4S requires 518. found 519.2 (M+H+).

Workup

  1. additioncharge
  2. customthe solvent was evaporated in vacuo
  3. dissolutionThe residue was dissolved in dichloromethane (DCM) (20 mL)
  4. additionsodium triacetoxyborohydride (195 mg) was added to the mixture
  5. stirringThe reaction mixture was stirred at room temperature overnight
  6. customThe reaction mixture was partitioned between ethyl acetate (100 mL) and saturated brine (30 mL)
  7. dry with materialThe organic phase was dried over sodium sulphate
  8. customevaporated in vacuo

Sources & evidence

ORD record
ord-f6261b93c077450e9d5dc2c31ed4ab3b
Source dataset
uspto-grants-2013_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08389508B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes