Sodium Hydroxide → 1-[4-(2-Tert-butyl-5-nitro-phenyl)-but-3-enyl]-pyrrolidine

HRID 969659Notes

Reaction equation

HRID 969659 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([N+:11]([O-:13])=[O:12])=[CH:7][C:6]=1[CH:14]=[CH:15][CH2:16][CH:17]=O)([CH3:4])([CH3:3])[CH3:2].[NH:19]1[CH2:23][CH2:22][CH2:21][CH2:20]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].C([O-])(O)=O.[Na+].[OH-].[Na+]>C1COCC1.CCOCC.CC(O)=O>[C:1]([C:5]1[CH:10]=[CH:9][C:8]([N+:11]([O-:13])=[O:12])=[CH:7][C:6]=1[CH:14]=[CH:15][CH2:16][CH2:17][N:19]1[CH2:23][CH2:22][CH2:21][CH2:20]1)([CH3:4])([CH3:3])[CH3:2]

Participants

9

Reactant 5

HCID 14798Sodium HydroxideHCID 31268PyrrolidineHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 738566804-(2-tert-Butyl-5-nitro-phenyl)-but-3-enal

Product 1

HCID 666886581-[4-(2-Tert-butyl-5-nitro-phenyl)-but-3-enyl]-pyrrolidine

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Procedure

4-(2-tert-Butyl-5-nitro-phenyl)-but-3-enal (895 mg) was dissolved in 40 mL THF, and to the solution was added pyrrolidine (0.317 mL). To the deep-orange solution was added NaBH(OAc)3 (1.151 g) and glacial AcOH (0.207 mL). The reaction was stirred at RT overnight, then treated with saturated aqueous NaHCO3 and diluted with Et2O and some 1 N NaOH. The layers were separated, and the organic layer was extracted with aqueous 2 N HCl. The acidic aqueous layer was basified to pH>12 with 6 N NaOH, extracted with Et2O, brine-washed, dried over Na2SO4, filtered, and concentrated in vacuo to provide 1-[4-(2-tert-butyl-5-nitro-phenyl)-but-3-enyl]-pyrrolidine as a orange-brown oil.

Workup

  1. customThe layers were separated
  2. extractionthe organic layer was extracted with aqueous 2 N HCl
  3. extractionextracted with Et2O, brine-
  4. washwashed
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-832188eb3e264d16ba66055e187b0758
Source dataset
uspto-grants-2007_12
Patent number
US07307088B2

Reaction notes

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