Benzaldehyde → 3-[(1-Benzyl-piperidin-4-yl)-(4-methyl-cyclohexanecarbonyl)-amino]-5-phenyl-thiophene-2-carboxylic acid methyl ester

HRID 749365Notes

Reaction equation

HRID 749365 reaction equation
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)=[CH:8][C:9]=1[N:10]([C:17]([CH:19]1[CH2:24][CH2:23][CH:22]([CH3:25])[CH2:21][CH2:20]1)=[O:18])[CH:11]1[CH2:16][CH2:15][NH:14][CH2:13][CH2:12]1)=[O:4].[CH:32](=O)[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClC(Cl)C>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:26]2[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=2)=[CH:8][C:9]=1[N:10]([CH:11]1[CH2:16][CH2:15][N:14]([CH2:32][C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[CH2:13][CH2:12]1)[C:17]([CH:19]1[CH2:20][CH2:21][CH:22]([CH3:25])[CH2:23][CH2:24]1)=[O:18])=[O:4]

Participants

5

Reactant 3

HCID 240BenzaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 59752320HCID 59752320, compound

Product 1

HCID 597523513-[(1-Benzyl-piperidin-4-yl)-(4-methyl-cyclohexanecarbonyl)-amino]-5-phenyl-thiophene-2-carboxylic acid methyl esterYield 61.5%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

To 3-[(4-Methyl-cyclohexanecarbonyl)-piperidin-4-yl-amino]-5-phenyl-thiophene-2-carboxylic acid methyl ester (43 mg, 0.098 mmol) in dichloroethane (1.0 ml) was added benzaldehyde (15 ul, 0.146 mmol), followed by sodium triacetoxyborohydride (41 mg, 0.195 mmol). The reaction mixture was stirred at room temperature for 4 h, quenched with a saturated NaHCO3 solution, and then extracted with Ethyl acetate (3×5 ml). The combined extracts were then washed with brine and dried on Na2SO4, filtered and concentrated. The residue was purified by preparative chromatography (50% EtOAc/Hex) to give 32 mg (61%) of 3-[(1-Benzyl-piperidin-4-yl)-(4-methyl-cyclohexanecarbonyl)-amino]-5-phenyl-thiophene-2-carboxylic acid methyl ester.

Workup

  1. customquenched with a saturated NaHCO3 solution
  2. extractionextracted with Ethyl acetate (3×5 ml)
  3. washThe combined extracts were then washed with brine
  4. customdried on Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by preparative chromatography (50% EtOAc/Hex)

Sources & evidence

ORD record
ord-6d200eb72a684df99b2fcc88abf3f6b2
Source dataset
uspto-grants-2008_07
Patent number
US07402608B2

Reaction notes

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