(3R)-(+)-3-(tert-Butoxycarbonylamino)pyrrolidine → tert-butyl {(3R)-1-[4-hydroxy-4-(2-isopropyl-1,3-thiazol-5-yl)cyclohexyl]pyrrolidin-3-yl}carbamate

HRID 1173256Notes

Reaction equation

HRID 1173256 reaction equation
[OH:1][C:2]1([C:9]2[S:13][C:12]([CH:14]([CH3:16])[CH3:15])=[N:11][CH:10]=2)[CH2:7][CH2:6][C:5](=O)[CH2:4][CH2:3]1.[NH:17]1[CH2:21][CH2:20][C@@H:19]([NH:22][C:23](=[O:29])[O:24][C:25]([CH3:28])([CH3:27])[CH3:26])[CH2:18]1>C(Cl)Cl.[Pd]>[C:25]([O:24][C:23](=[O:29])[NH:22][C@@H:19]1[CH2:20][CH2:21][N:17]([CH:5]2[CH2:6][CH2:7][C:2]([OH:1])([C:9]3[S:13][C:12]([CH:14]([CH3:16])[CH3:15])=[N:11][CH:10]=3)[CH2:3][CH2:4]2)[CH2:18]1)([CH3:28])([CH3:26])[CH3:27]

Participants

5

Reactant 2

HCID 1514397(3R)-(+)-3-(tert-Butoxycarbonylamino)pyrrolidineHCID 595561884-Hydroxy-4-(2-isopropylthiazol-5-yl)cyclohexanone

Product 1

HCID 59556180tert-butyl {(3R)-1-[4-hydroxy-4-(2-isopropyl-1,3-thiazol-5-yl)cyclohexyl]pyrrolidin-3-yl}carbamateYield 76%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 6344DichloromethaneSolvent

Procedure

To a Parr hydrogenation bottle was added 4-hydroxy-4-(2-isopropyl-1,3-thiazol-5-yl)cyclohexanone (0.50 g, 2.09 mmol) and tert-butyl (3R)-pyrrolidin-3-ylcarbamate (0.373 g, 2.0 mmol), dissolved in CH2Cl2 (20 mL), followed by the addition of 10% Pd/C (0.12 g). This mixture was hydrogenated at 35 psi for 24 hour. After the catalyst was filtered and washed with methanol, the filtrate was concentrated in vacuo and chromatographed using MeOH/EtOAc/Et3N (1:9:0.1) to give 0.62 g of title compound in 76% yield. MS (EI) calcd: (M+1)+=409.2; found: 410.2.

Workup

  1. filtrationAfter the catalyst was filtered
  2. washwashed with methanol
  3. concentrationthe filtrate was concentrated in vacuo
  4. customchromatographed

Sources & evidence

ORD record
ord-83200e631e594c4e8b90c8e62ce4a9f3
Source dataset
uspto-grants-2010_11
Patent number
US07834021B2

Reaction notes

Loading…