Diisopropylethylamine → HCID 10887136, compound

HRID 896916Notes

Reaction equation

HRID 896916 reaction equation
Cl.CN(C)CCCN=C=NCC.[C:13]([O:17][C:18]([NH:20][C:21]([CH3:29])([CH3:28])[CH2:22]/[CH:23]=[CH:24]/[C:25]([OH:27])=O)=[O:19])([CH3:16])([CH3:15])[CH3:14].[CH2:30]([C@@H:37]([N:50]([CH3:67])[C:51](=[O:66])[C@H:52]([NH:64][CH3:65])[CH2:53][C:54]1[CH:63]=[CH:62][C:61]2[C:56](=[CH:57][CH:58]=[CH:59][CH:60]=2)[CH:55]=1)[C:38]([N:40]1[CH2:45][CH2:44][CH:43]([CH2:46][N:47]([CH3:49])[CH3:48])[CH2:42][CH2:41]1)=[O:39])[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1.C(N(C(C)C)C(C)C)C>ClCCl.CN(C)C=O.C(OCC)(=O)C>[C:13]([O:17][C:18](=[O:19])[NH:20][C:21]([CH3:29])([CH3:28])[CH2:22]/[CH:23]=[CH:24]/[C:25](=[O:27])[N:64]([C@@H:52]([C:51](=[O:66])[N:50]([C@H:37]([CH2:30][C:31]1[CH:32]=[CH:33][CH:34]=[CH:35][CH:36]=1)[C:38]([N:40]1[CH2:45][CH2:44][CH:43]([CH2:46][N:47]([CH3:48])[CH3:49])[CH2:42][CH2:41]1)=[O:39])[CH3:67])[CH2:53][C:54]1[CH:63]=[CH:62][C:61]2[C:56](=[CH:57][CH:58]=[CH:59][CH:60]=2)[CH:55]=1)[CH3:65])([CH3:14])([CH3:15])[CH3:16]

Participants

8

Reactant 4

HCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10847814(2E)-5-(tert-Butyloxycarbonylamino)-5-methylhex-2-enoic acidHCID 11124118HCID 11124118, compound

Product 1

HCID 10887136HCID 10887136, compoundYield 72,927.797%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolvent2×HCID 6344DichloromethaneSolvent2×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

At 0° C., N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (112 mg, 0.58 mmol) was added to a solution of (2E)-5-(tert-butoxycarbonylamino)-5-methylhex-2-enoic acid (142 mg, 0.58 mmol) and 1-hydroxy-7-azabenzotriazble (79 mg, 0.58 mmol) in dichloromethane (10 ml) and N,N-dimethylformamide (5 ml). The reaction mixture was stirred for 20 min at 0° C. A solution of (2R)-N-[(1R)-1-benzyl-2-(4-((dimethylamino)methyl)piperidin-1-yl)-2-oxoethyl]-N-methyl-2-(methylamino)-3-(2-naphthyl)propionamide (300 mg, 0.58 mmol) in dichloromethane (5 ml) and N,N-dimethylformamide (5 ml) and ethyldiisopropylamine 0.10 ml, 0.58 mmol) were added successively. The reaction mixture was stirred for 3 days, while it was warming up to room temperature. It was diluted with ethyl acetate (70 ml) and washed with a saturated aqueous solution of sodium hydrogen carbonate (70 ml). The aqueous phase was extracted with ethyl acetate (3×50 ml). The combined organic layers were dried over magnesium sulfate. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (70 g), using dichloromethane/methanol/25% aqueous ammonia (200:10:1) as eluent, to give 313 g of {(3E)-4-[N-((1R)-1-{N-[(1R)-1-benzyl-2-(4-((dimethylamino)methyl)piperidin-1-yl)-2-oxoethyl]-N-methylcarbamoyl}-2-(2-naphthyl)ethyl)-N-methylcarbamoyl]-1,1-dimethylbut-3-enyl}carbamic acid tert-butyl ester.

Workup

  1. stirringThe reaction mixture was stirred for 3 days, while it
  2. temperaturewas warming up to room temperature
  3. washwashed with a saturated aqueous solution of sodium hydrogen carbonate (70 ml)
  4. extractionThe aqueous phase was extracted with ethyl acetate (3×50 ml)
  5. dry with materialThe combined organic layers were dried over magnesium sulfate
  6. customThe solvent was removed in vacuo
  7. customThe crude product was purified by flash chromatography on silica (70 g)

Sources & evidence

ORD record
ord-2a6888130f314a27938593f9be713cd2
Source dataset
uspto-grants-2005_07
Patent number
US06919315B1

Reaction notes

Loading…