5-Chloro-1-naphthoic acid → N-[(1RS,2SR)-1-(4-tert-butoxybenzyl)-2-(3-chlorophenyl)-2-hydroxyethyl]-5-chloro-1-naphthamide

HRID 1610637Notes

Reaction equation

HRID 1610637 reaction equation
[NH2:1][CH:2]([CH2:12][C:13]1[CH:18]=[CH:17][C:16]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[CH:15][CH:14]=1)[CH:3]([C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([Cl:11])[CH:6]=1)[OH:4].[Cl:24][C:25]1[CH:34]=[CH:33][CH:32]=[C:31]2[C:26]=1[CH:27]=[CH:28][CH:29]=[C:30]2[C:35](O)=[O:36].Cl.C(N=C=NCCCN(C)C)C.O.ON1C2C=CC=CC=2N=N1>C(#N)C.O>[C:20]([O:19][C:16]1[CH:15]=[CH:14][C:13]([CH2:12][CH:2]([NH:1][C:35]([C:30]2[C:31]3[C:26](=[C:25]([Cl:24])[CH:34]=[CH:33][CH:32]=3)[CH:27]=[CH:28][CH:29]=2)=[O:36])[CH:3]([C:5]2[CH:10]=[CH:9][CH:8]=[C:7]([Cl:11])[CH:6]=2)[OH:4])=[CH:18][CH:17]=1)([CH3:23])([CH3:22])[CH3:21]

Participants

7

Reactant 4

HCID 9370575-Chloro-1-naphthoic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 22261849(1RS,2SR)-2-amino-3-(4-tert-butoxyphenyl)-1-(3-chlorophenyl)propan-1-ol

Product 1

HCID 22261909N-[(1RS,2SR)-1-(4-tert-butoxybenzyl)-2-(3-chlorophenyl)-2-hydroxyethyl]-5-chloro-1-naphthamide

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Procedure

To a solution of (1RS,2SR)-2-amino-3-(4-tert-butoxyphenyl)-1-(3-chlorophenyl)propan-1-ol (300 mg, 0.90 mmol) in acetonitrile (20 ml) were added 5-chloronaphthalenecarboxylic acid (186 mg, 0.90 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (258 mg, 1.35 mmol) and 1-hydroxybenzotriazole hydrate (138 mg, 0.90 mmol), and the mixture was stirred overnight at room temperature. The reaction solution was diluted with water (100 ml) and extracted with ethyl acetate (100 ml×2). The extract was washed successively with water and saturated brine, dried (anhydrous magnesium sulfate) and evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=4:1-2:1). Recrystallization from ethyl acetate-hexane gave the objective substance (136 mg, 29%).

Workup

  1. extractionextracted with ethyl acetate (100 ml×2)
  2. washThe extract was washed successively with water and saturated brine
  3. dry with materialdried (anhydrous magnesium sulfate)
  4. customevaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=4:1-2:1)
  6. customRecrystallization from ethyl acetate-hexane
  7. customgave the objective substance (136 mg, 29%)

Sources & evidence

ORD record
ord-0600c27278354b4ea330db4f0ec0a641
Source dataset
uspto-grants-2006_01
Patent number
US06982348B2

Reaction notes

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