benzyl (S)-1-((1S,2R,4R)-2-acetamido-4-(tert-butylamino)cyclohexyl)-2-oxopyrrolidin-3-ylcarbamate → N-((1R,2S,5R)-2-((S)-3-amino-2-oxopyrrolidin-1-yl)-5-(tert-butylamino)cyclohexyl)acetamide

HRID 554746Notes

Reaction equation

HRID 554746 reaction equation
[C:1]([NH:4][C@@H:5]1[CH2:10][C@H:9]([NH:11][C:12]([CH3:15])([CH3:14])[CH3:13])[CH2:8][CH2:7][C@@H:6]1[N:16]1[CH2:20][CH2:19][C@H:18]([NH:21]C(=O)OCC2C=CC=CC=2)[C:17]1=[O:32])(=[O:3])[CH3:2]>CO.[Pd]>[NH2:21][C@H:18]1[CH2:19][CH2:20][N:16]([C@H:6]2[CH2:7][CH2:8][C@@H:9]([NH:11][C:12]([CH3:15])([CH3:13])[CH3:14])[CH2:10][C@H:5]2[NH:4][C:1](=[O:3])[CH3:2])[C:17]1=[O:32]

Participants

4

Reactant 1

HCID 25031312benzyl (S)-1-((1S,2R,4R)-2-acetamido-4-(tert-butylamino)cyclohexyl)-2-oxopyrrolidin-3-ylcarbamate

Product 1

HCID 67180344N-((1R,2S,5R)-2-((S)-3-amino-2-oxopyrrolidin-1-yl)-5-(tert-butylamino)cyclohexyl)acetamideYield 98.6%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

To a solution of benzyl (S)-1-((1S,2R,4R)-2-acetamido-4-(tert-butylamino)cyclohexyl)-2-oxopyrrolidin-3-ylcarbamate (43.3 g, 98 mmol) in methanol (400 ml), 10% wet Pd/C (4.34 g) was added. The mixture was evacuated and back-filled with hydrogen with a hydrogen balloon. The mixture was stirred at room temperature for 5 h. The mixture was filtered and washed with methanol (500 ml) and concentrated under vacuum to dryness. The crude product obtained was distilled with IPA (2×100 ml) under reduced pressure to give product N-((1R,2S,5R)-2-((S)-3-amino-2-oxopyrrolidin-1-yl)-5-(tert-butylamino)cyclohexyl)acetamide as an oil (30 g, 98% yield). This amine was used in the next step without further purification.

Workup

  1. customThe mixture was evacuated
  2. additionback-filled with hydrogen with a hydrogen balloon
  3. filtrationThe mixture was filtered
  4. washwashed with methanol (500 ml)
  5. concentrationconcentrated under vacuum to dryness
  6. customThe crude product obtained
  7. distillationwas distilled with IPA (2×100 ml) under reduced pressure

Sources & evidence

ORD record
ord-a8552c9ede7f49c6b0e631f1f1ffa61f
Source dataset
uspto-grants-2011_11
Patent number
US08049019B2

Reaction notes

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