Acetic Acid → Biphenyl-2-ylcarbamic Acid 1-(9-{Benzyl-[(R)-2-(8-benzyloxy-2-oxo-1,2-dihydroquinolin-5-yl)-2-(tert-butyldimethylsilanyloxy)ethyl]amino}nonyl)-piperidin-4-yl Ester

HRID 1917032Notes

Reaction equation

HRID 1917032 reaction equation
[CH2:1]([NH:8][CH2:9][C@@H:10]([C:19]1[CH:28]=[CH:27][C:26]([O:29][CH2:30][C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)=[C:25]2[C:20]=1[CH:21]=[CH:22][C:23](=[O:37])[NH:24]2)[O:11][Si:12]([C:15]([CH3:18])([CH3:17])[CH3:16])([CH3:14])[CH3:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(O)(=O)C.O=[CH:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH2:50][CH2:51][N:52]1[CH2:57][CH2:56][CH:55]([O:58][C:59](=[O:73])[NH:60][C:61]2[CH:66]=[CH:65][CH:64]=[CH:63][C:62]=2[C:67]2[CH:72]=[CH:71][CH:70]=[CH:69][CH:68]=2)[CH2:54][CH2:53]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)(O)[O-].[Na+]>ClCCl>[CH2:1]([N:8]([CH2:9][C@@H:10]([C:19]1[CH:28]=[CH:27][C:26]([O:29][CH2:30][C:31]2[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=2)=[C:25]2[C:20]=1[CH:21]=[CH:22][C:23](=[O:37])[NH:24]2)[O:11][Si:12]([C:15]([CH3:18])([CH3:17])[CH3:16])([CH3:14])[CH3:13])[CH2:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH2:50][CH2:51][N:52]1[CH2:53][CH2:54][CH:55]([O:58][C:59](=[O:73])[NH:60][C:61]2[CH:66]=[CH:65][CH:64]=[CH:63][C:62]=2[C:67]2[CH:68]=[CH:69][CH:70]=[CH:71][CH:72]=2)[CH2:56][CH2:57]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 5

HCID 176Acetic AcidHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 666727545-[(R)-2-benzylamino 1-(tert-butyldimethylsilanyloxy)ethyl]-8-benzyloxy-1H-quinolin-2-oneHCID 85988898Biphenyl-2-ylcarbamic Acid 1-(9-Oxononyl)piperidin-4-yl Ester

Product 1

HCID 86600266Biphenyl-2-ylcarbamic Acid 1-(9-{Benzyl-[(R)-2-(8-benzyloxy-2-oxo-1,2-dihydroquinolin-5-yl)-2-(tert-butyldimethylsilanyloxy)ethyl]amino}nonyl)-piperidin-4-yl EsterYield 93.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a 300 mL round-bottomed flask was added 5-[(R)-2-benzylamino-1-(tert-butyldimethylsilanyloxy)ethyl]-8-benzyloxy-1H-quinolin-2-one (5 g, 9.73 mmol), dichloromethane (100 mL) and glacial acetic acid (0.6 mL, 10 mmol). This mixture was cooled to 0° C. using an ice bath and biphenyl-2-ylcarbamic acid 1-(9-oxononyl)piperidin-4-yl ester (4.6 g, 9.73 mmol) was added with stirring. This mixture was stirred at 0° C. for 30 minutes and then sodium triacetoxyborohydride (6.15 g, 29 mmol) was added in portions over 15 minutes. The reaction mixture was stirred at 0° to 10° C. for 2 hours and then aqueous saturated sodium bicarbonate solution (50 mL) was added and this mixture was stirred for 15 minutes. The layers were then separated and the organic layer was washed with 5% aqueous sodium chloride solution (50 mL), dried (MgSO4), filtered and concentrated under reduced pressure to afford the title intermediate (8.5 g, 80% purity by HPLC), which was used without further purification.

Workup

  1. stirringThis mixture was stirred at 0° C. for 30 minutes
  2. stirringThe reaction mixture was stirred at 0° to 10° C. for 2 hours
  3. stirringthis mixture was stirred for 15 minutes
  4. customThe layers were then separated
  5. washthe organic layer was washed with 5% aqueous sodium chloride solution (50 mL)
  6. dry with materialdried (MgSO4)
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-875c131df36144e9a390e38a798f4e2e
Source dataset
uspto-grants-2013_12
Patent number
US08618131B2

Reaction notes

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