Acetic Acid → HCID 23505993, compound

HRID 1840032Notes

Reaction equation

HRID 1840032 reaction equation
[CH:1]1([C:6]2[CH:7]=[C:8]([CH:11]=[CH:12][CH:13]=2)[CH:9]=O)[CH2:5][CH2:4][CH2:3][CH2:2]1.[O:14]([C:21]1[CH:22]=[C:23]([CH:25]=[CH:26][CH:27]=1)[NH2:24])[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].C(O)(=O)C>O.ClCCCl>[O:14]([C:21]1[CH:22]=[C:23]([NH:24][CH2:9][C:8]2[CH:11]=[CH:12][CH:13]=[C:6]([CH:1]3[CH2:5][CH2:4][CH2:3][CH2:2]3)[CH:7]=2)[CH:25]=[CH:26][CH:27]=1)[C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 771353-PhenoxyanilineHCID 5049666Sodium triacetoxyborohydrideHCID 10749755201851-05-0

Product 1

HCID 23505993HCID 23505993, compoundYield 22%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 962WaterSolvent

Procedure

To a 1,2-dichloroethane (12 mL) solution of 3-cyclopentylbenzaldehyde (0.69 g, 4.0 mmol; P. L. Ornstein et al., J. Med. Chem. 1998, 41, 358-378) was added 3-phenoxyaniline (0.73 g, 4.0 mmol), NaB(OAc)3H (1.08 g, 5.1 mmol) and acetic acid (0.24 mL, 4.2 mmol). The cloudy solution was stirred at room temperature for 2 h. The reaction mixture was poured into water and extracted with dichloromethane. The organic layer was washed with saturated NaHCO3 and brine, dried (MgSO4) and evaporated to an oil. Purification by flash chromatography on silica gel eluting with 10% ethyl acetate in hexane gave 0.30 g (22%) of the desired N-(3-phenoxyphenyl)-[[3-cyclopentylphenyl]methyl]amine product as a colorless oil. 1H NMR (CDCl3) δ 1.55 (m, 2H), 1.63 (m, 2H), 1.78 (m, 2H), 2.02 (m, 2H), 2.94 (m, 1H), 4.10 (m, 1H), 4.22 (m, 2H), 6.35 (m, 3H), 7.0-7.2 (m, 10H). The formation of the desired product was monitored by the disappearance of the aldehyde peak (δ˜10) and the formation of the benzyl peak (δ 4.22) in the 1H NMR spectrum.

Workup

  1. extractionextracted with dichloromethane
  2. washThe organic layer was washed with saturated NaHCO3 and brine
  3. dry with materialdried (MgSO4)
  4. customevaporated to an oil
  5. customPurification by flash chromatography on silica gel eluting with 10% ethyl acetate in hexane

Sources & evidence

ORD record
ord-b993dd265d1a4577bd8d9b0062c963cc
Source dataset
uspto-grants-2004_01
Patent number
US06677375B2

Reaction notes

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