Methanol → 6-[4-(Benzylamino-methyl)-phenylsulfanyl]-nicotinamide

HRID 601583Notes

Reaction equation

HRID 601583 reaction equation
[CH2:1]([NH2:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:9]([C:11]1[CH:16]=[CH:15][C:14]([S:17][C:18]2[CH:26]=[CH:25][C:21]([C:22]([NH2:24])=[O:23])=[CH:20][N:19]=2)=[CH:13][CH:12]=1)=O.CO.[BH4-].[Na+]>O>[CH2:1]([NH:8][CH2:9][C:11]1[CH:12]=[CH:13][C:14]([S:17][C:18]2[CH:26]=[CH:25][C:21]([C:22]([NH2:24])=[O:23])=[CH:20][N:19]=2)=[CH:15][CH:16]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 887MethanolHCID 7504BenzylamineHCID 4311764Sodium borohydrideHCID 597178526-(4-Formyl-phenylsulfanyl)-nicotinamide

Product 1

HCID 115520286-[4-(Benzylamino-methyl)-phenylsulfanyl]-nicotinamideYield 42.9%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Combine benzylamine (17 mg, 0.16 mmol), 6-(4-formyl-phenylsulfanyl)-nicotinamide (40 mg, 0.16 mmol), 3 Å molecular sieves (0.1 g), and methanol (3 mL) and stir overnight at room temperature. Filter off the sieves then add sodium borohydride (25 mg, 0.64 mmol) to the reaction and stirred at room temperature for 1 hour. Pour the reaction into water then extract with ethyl acetate (3×10 mL). The combined ethyl acetate extracts were dried over sodium chloride/magnesium sulfate, filtered, and concentrated on a rotary evaporator to yield the crude product (50 mg). The crude product was purified by flash column chromatography on silica gel eluting with 10% aqueous ammonium hydroxide in ethanol and chloroform to yield 6-[4-(benzylamino-methyl)-phenylsulfanyl]-nicotinamide, (24 mg): m/z=349.99 (M+1); 1H NMR (MeOD, 300.00 MHz): (8.84 (dd, 1H, J=2.3, 1.0 Hz), 8.02 (dd, 1H, J=8.6, 2.3 Hz), 7.66-7.49 (m, 4H), 7.66-7.49 (m, 4H), 7.42-7.34 (m, 5H), 6.99-6.92 (m, 1H), 3.88-3.77 (m, 4H). HPLC=99% (5.82 minutes (5/95 to 95/5 ACN/(0.1% TFA in water) over 10 minutes, Zorbax SB-Phenyl 4.6 mm×15 cm×5 micron, λ=254 nM.

Workup

  1. filtrationFilter off the sieves
  2. additionPour
  3. extractionthen extract with ethyl acetate (3×10 mL)
  4. dry with materialThe combined ethyl acetate extracts were dried over sodium chloride/magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated on a rotary evaporator
  7. customto yield the crude product (50 mg)
  8. customThe crude product was purified by flash column chromatography on silica gel eluting with 10% aqueous ammonium hydroxide in ethanol and chloroform

Sources & evidence

ORD record
ord-8f63a0d15d7d455d9690041f25ebb926
Source dataset
uspto-grants-2011_03
Patent number
US07902372B2

Reaction notes

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