Acetic Acid → HCID 9838958, compound

HRID 429187Notes

Reaction equation

HRID 429187 reaction equation
[NH:1]1[CH2:6][CH2:5][CH:4]([C:7]2[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[NH:9][C:8]=2[C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH2:3][CH2:2]1.[C:22]([BH3-])#N.[Na+].C=O.CC(O)=O.C([O-])(O)=O.[Na+]>CO>[CH3:22][N:1]1[CH2:6][CH2:5][CH:4]([C:7]2[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[NH:9][C:8]=2[C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH2:3][CH2:2]1

Participants

7

Reactant 5

HCID 176Acetic AcidHCID 712FormaldehydeHCID 516892Sodium BicarbonateHCID 5003444Sodium cyanoborohydrideHCID 98820672-Phenyl-3-(4-piperidinyl)-1H-indole

Product 1

HCID 9838958HCID 9838958, compoundYield 24.1%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

3-(Piperidin-4-yl)-2-phenyl-1H-indole (200 mg, 0.7 mmol), sodium cyanoborohydride (51 mg, 0.8 mmol), formaldehyde (60 μl, 40% in H2O, 0.8 mmol) and AcOH (97 μl, 1.7 mmol) were stirred in MeOH (5 ml) at 0° C. for 1 h, then room temperature for 2 h. The solution was poured into saturated NaHCO3 solution and extracted with EtOAc. The organic layer was washed with water and brine, dried, and evaporated in vacuo to give white crystals (49 mg, 23%), mp 245-246° C. (from EtOH); δH (360 MHz, d6-DMSO) 1.88 (2H, d, J 13, NCH2CHAHB), 2.60-2.80 (2H, m, NCH2CHAHB), 2.76 (3H, s, CH3), 3.00-3.20 (3H, m, CH2CH and NCHAHB), 3.44 (2H, d, J 12, NCHAHB), 6.99 (1H, t, J 7, indole-H), 7.09 (1H, t, J 7, indole-H), 7.20-7.50 (6H, m, ArH), 7.98 (1H, d, J 7, ArH), 11.20 (1H, br s, indole NH); m/z (ES+) 291 (M++H).

Workup

  1. extractionextracted with EtOAc
  2. washThe organic layer was washed with water and brine
  3. customdried
  4. customevaporated in vacuo

Sources & evidence

ORD record
ord-3091e19e35384fafac0647be92e90325
Source dataset
uspto-grants-2001_11
Patent number
US06316468B1

Reaction notes

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