Hydrochloric Acid → HCID 53312154, compound

HRID 924338Notes

Reaction equation

HRID 924338 reaction equation
[C:1]([C@@H:9]1[CH2:13][CH:12]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=[CH:17][CH:16]=2)[N:11](/[CH:27]=[CH:28]/[C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)[C:10]1=[O:35])(=O)C1C=CC=CC=1.N1CCOCC1.C=O.Cl>CO>[C:18]1([C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=2)[CH:17]=[CH:16][C:15]([CH2:14][C@H:12]2[N:11](/[CH:27]=[CH:28]/[C:29]3[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=3)[C:10](=[O:35])[C:9](=[CH2:1])[CH2:13]2)=[CH:20][CH:19]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 712FormaldehydeHCID 8083MorpholineHCID 86673650HCID 86673650, compound

Product 1

HCID 53312154HCID 53312154, compound

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

(S)-3-Benzoyl-5-biphenyl-4-ylmethyl-1-((E)-styryl)-pyrrolidin-2-one (4a, R1=styryl, R4=phenyl) (0.50 g, 1.1 mmol) is dissolved in 2 mL of methanol, add morpholine (125 mg, 1.4 mmol) and paraformaldehyde (66 mg, 2.2 mmol) in one portion, reflux for 2 h under nitrogen atmosphere. The reaction mixture is added 10 mL of 5% HCl(aq), extract with toluene, the organic extracts are washed with saturated Na2CO3 aqueous solution and brine, dry over anhydrous Na2SO4, evaporate the solvent under vacuum, the residue is purified by column chromatography to obtain (R)-5-Biphenyl-4-ylmethyl-3-methylene-1-((E)-styryl)-pyrrolidin-2-one (1a, R1=styryl). Spectroscopic data as Example 23, Method 1.

Workup

  1. temperaturereflux for 2 h under nitrogen atmosphere
  2. extractionextract with toluene
  3. washthe organic extracts are washed with saturated Na2CO3 aqueous solution and brine
  4. dry with materialdry over anhydrous Na2SO4
  5. customevaporate the solvent under vacuum
  6. customthe residue is purified by column chromatography

Sources & evidence

ORD record
ord-1f02e7a5e5ce4de2b7c03631f1e700b6
Source dataset
uspto-grants-2016_03
Patent number
US09278908B2

Reaction notes

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