Benzoic Acid → (+)-5-[[(2R, 4S)-4-benzoyloxy-1-(4-methoxyphenethyl)pyrrolidin-2-yl]methyl]-5,11-dihydrodibenzo[b,e][1,4]oxazepine

HRID 2304408Notes

Reaction equation

HRID 2304408 reaction equation
[OH:1][C@H:2]1[CH2:6][N:5]([CH2:7][CH2:8][C:9]2[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[CH:11][CH:10]=2)[C@@H:4]([CH2:17][N:18]2[C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=3[CH2:22][O:21][C:20]3[CH:29]=[CH:30][CH:31]=[CH:32][C:19]2=3)[CH2:3]1.[C:33](O)(=[O:40])[C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1.CCOC(/N=N/C(OCC)=O)=O>O1CCCC1.CCOCC>[C:33]([O:1][C@@H:2]1[CH2:6][N:5]([CH2:7][CH2:8][C:9]2[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[CH:11][CH:10]=2)[C@@H:4]([CH2:17][N:18]2[C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=3[CH2:22][O:21][C:20]3[CH:29]=[CH:30][CH:31]=[CH:32][C:19]2=3)[CH2:3]1)(=[O:40])[C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1

Participants

6

Reactant 3

HCID 243Benzoic AcidHCID 5462977Diethyl azodicarboxylateHCID 15481939(+)-5,11-dihydro-5-[[(2R,4R)-4-hydroxy-1-(4-methoxyphenethyl)pyrrolidin-2-yl]methyl]dibenzo[b,e][1,4]oxazepine

Product 1

HCID 15481941(+)-5-[[(2R, 4S)-4-benzoyloxy-1-(4-methoxyphenethyl)pyrrolidin-2-yl]methyl]-5,11-dihydrodibenzo[b,e][1,4]oxazepineYield 83.3%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Procedure

Mixture of 660 mg (1.53 mmol) of (+)-5,11-dihydro-5-[[(2R, 4R) -4-hydroxy-1-(4-methoxyphenethyl) pyrrolidin-2-yl]methyl]dibenzo[b,e][1,4]oxazepine, 1.04 g (3.98 mmol), 486 mg (3.98 mmol) of benzoic acid, and 693 mg (3.98 mmol) of DEAD in tetrahydofuran (15 ml) was stirred for 20 hours at room temperature. The mixture was diluted with ether and the solution was washed with saturated aqueous sodium hydrogen carbonate, water, and saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by silicagel column chromatography (ethyl acetate: n-hexane=1:1 ) to give 680 mg (83.3%) of (+)-5-[[(2R, 4S)-4-benzoyloxy-1-(4-methoxyphenethyl)pyrrolidin-2-yl]methyl]-5,11-dihydrodibenzo[b,e][1,4]oxazepine as pale yellow amorphous.

Workup

  1. washthe solution was washed with saturated aqueous sodium hydrogen carbonate, water, and saturated aqueous sodium chloride
  2. dry with materialdried over anhydrous sodium sulfate
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by silicagel column chromatography (ethyl acetate: n-hexane=1:1 )

Sources & evidence

ORD record
ord-b2b483d1633744a68dee0138c3b5b065
Source dataset
uspto-grants-2002_08
Patent number
US06436922B1

Reaction notes

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