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Acetic Acid → Ethyl 1-{[3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-2-ethylphenyl]methyl}-4-piperidinecarboxylate

HRID 1942656
Notes
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Reaction equation

HRID 1942656 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[S:13][C:14]([C:17]3[C:18]([CH2:25][CH3:26])=[C:19]([CH:22]=[CH:23][CH:24]=3)[CH:20]=O)=[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:36]1[CH2:41][CH2:40][CH:39]([C:42]([O:44][CH2:45][CH3:46])=[O:43])[CH2:38][CH2:37]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]([CH2:25][CH3:26])=[C:19]([CH2:20][N:36]4[CH2:41][CH2:40][CH:39]([C:42]([O:44][CH2:45][CH3:46])=[O:43])[CH2:38][CH2:37]4)[CH:22]=[CH:23][CH:24]=3)=[CH:15][N:16]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:11])[CH3:10]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 70770Ethyl 4-piperidinecarboxylateHCID 517045Sodium AcetateHCID 584940933-(2-{3-Chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-2-ethylbenzaldehyde

Product 1

HCID 58494151Ethyl 1-{[3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-2-ethylphenyl]methyl}-4-piperidinecarboxylate
Yield 100.1%

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)-2-ethylbenzaldehyde (D74) (120 mg), acetic acid (0.036 mL) and sodium acetate (51.0 mg) in ethanol (20.00 mL) stirred under nitrogen at room temperature was added ethyl 4-piperidinecarboxylate (196 mg) in one charge. The reaction mixture was stirred at room temperature for 30 min, then the solvent was evaporated in vacuo. The residue was dissolved in dichloromethane (DCM) (20 mL), sodium triacetoxyborohydride (165 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 ethyl 1-{[3-(2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-2-ethylphenyl]methyl}-4-piperidinecarboxylate (D85) (164 mg). The crude product was used for next step without further purification. MS (ES): C29H35ClN2O3S requires 526. found 527.2 (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 (165 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-d5dc03f0c36d417a9f54cc58d53723ac
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