Acetic Acid → HCID 66981796, compound

HRID 1942658Notes

Reaction equation

HRID 1942658 reaction equation
[CH2:1]([C:3]1[C:8]([CH:9]=O)=[CH:7][CH:6]=[CH:5][C:4]=1[C:11]1[S:15][C:14]([C:16]2[CH:17]=[CH:18][C:19]([O:24][CH:25]([CH3:27])[CH3:26])=[C:20]([CH:23]=2)[C:21]#[N:22])=[N:13][CH:12]=1)[CH3:2].C(O)(=O)C.C([O-])(=O)C.[Na+].[NH:37]1[CH2:40][CH:39]([C:41]([O:43][CH3:44])=[O:42])[CH2:38]1>C(O)C>[C:21]([C:20]1[CH:23]=[C:16]([C:14]2[S:15][C:11]([C:4]3[C:3]([CH2:1][CH3:2])=[C:8]([CH2:9][N:37]4[CH2:40][CH:39]([C:41]([O:43][CH3:44])=[O:42])[CH2:38]4)[CH:7]=[CH:6][CH:5]=3)=[CH:12][N:13]=2)[CH:17]=[CH:18][C:19]=1[O:24][CH:25]([CH3:27])[CH3:26])#[N:22]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 517045Sodium AcetateHCID 20132751Methyl azetidine-3-carboxylateHCID 866590075-[5-(2-Ethyl-3-formylphenyl)-1,3-thiazol-2-yl]-2-[(1-methylethyl)oxy]benzonitrile

Product 1

HCID 66981796HCID 66981796, compoundYield 83.1%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of 5-[5-(2-ethyl-3-formylphenyl)-1,3-thiazol-2-yl]-2-[(1-methylethyl)oxy]benzonitrile (D73) (120 mg), acetic acid (0.023 mL) and sodium acetate (32.7 mg) in ethanol (20.00 mL) stirred under nitrogen at room temperature was added methyl 3-azetidinecarboxylate (92 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 (169 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-{[3-(2-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,3-thiazol-5-yl)-2-ethylphenyl]methyl}-3-azetidinecarboxylate (D87) (126 mg). The crude product was used for next step without further purification. MS (ES): C27H29N3O3S requires 475. found 476.2 (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 (169 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-723e07a0a6194dd18fca39b5013d31ea
Source dataset
uspto-grants-2013_03
Patent number
US08389508B2

Reaction notes

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