Acetic Acid → HCID 178471606, compound

HRID 2404089Notes

Reaction equation

HRID 2404089 reaction equation
[C:1]([C@H:5]1[CH2:10][CH2:9][C@H:8]([O:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[CH:18]=[C:17]([CH:22]=O)[CH:16]=[CH:15]3)[CH2:7][CH2:6]1)([CH3:4])([CH3:3])[CH3:2].[NH2:24][CH:25]([CH3:32])[CH2:26][C:27]([O:29][CH2:30][CH3:31])=[O:28].C(O)(=O)C.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].C([O-])(O)=O.[Na+]>ClC(Cl)C>[C:1]([C@H:5]1[CH2:10][CH2:9][C@H:8]([O:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[CH:18]=[C:17]([CH2:22][NH:24][CH:25]([CH3:32])[CH2:26][C:27]([O:29][CH2:30][CH3:31])=[O:28])[CH:16]=[CH:15]3)[CH2:7][CH2:6]1)([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 5

HCID 176Acetic AcidHCID 98103Ethyl 3-aminobutyrateHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 178445787HCID 178445787, compound

Product 1

HCID 178471606HCID 178471606, compoundYield 88%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

6-(trans-4-tert-butylcyclohexyloxy)-2-naphthaldehyde (30 mg, 0.097 mmol), ethyl 3-aminobutanoate (CAS no. 5303-65-1) (19 mg, 0.145 mmol), and acetic acid (17 mg, 0.291 mmol) were dissolved in dichloroethane (2 mL). The mixture was stirred at r.t. for 10 min under nitrogen atmosphere. Then NaBH(OAc)3 (41 mg, 0.194 mmol) was added to the mixture and the mixture was stirred at r.t. for 15 h. Then saturated NaHCO3 was added to the mixture to adjust the pH to 8. The mixture was extracted with ethyl acetate and the organic layer was purified by silica gel column chromatography using dichloromethane:methanol 10:1 to give product ethyl 3-((6-(trans-4-tert-butylcyclohexyloxy)naphthalen-2-yl)methylamino)butanoate (40 mg, 88%) as a slight yellow solid. ESI-MS: 426.1 (M+H)+. 1H NMR (400 MHz, CDCl3) δ 7.70-7.65 (m, 3H), 7.41 (d, 1H), 7.13-7.09 (m, 2H), 4.28-4.23 (m, 1H), 4.12 (q, 2H), 3.98-3.88 (m, 2H), 3.22-3.18 (m, 1H), 2.53-2.42 (m, 2H), 2.28-2.25 (m, 2H), 1.90-1.87 (m, 2H), 1.45-1.42 (m, 2H), 1.26-1.09 (m, 9H), 0.90 (s, 9H).

Workup

  1. stirringthe mixture was stirred at r.t. for 15 h
  2. extractionThe mixture was extracted with ethyl acetate
  3. customthe organic layer was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-fe3ff1e2161e4db0a59120d5dcca7691
Source dataset
uspto-grants-2014_08
Patent number
US08802659B2

Reaction notes

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