Hydrochloric Acid → HCID 21896937, compound

HRID 2055262Notes

Reaction equation

HRID 2055262 reaction equation
Cl[C:2]1[N:7]=[C:6]([NH:8][C:9]2[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[C:11]([Cl:17])[CH:10]=2)[N:5]=[C:4]([NH:18][CH2:19][CH:20]2[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]2)[N:3]=1.[CH3:26][N:27]1[CH2:32][CH2:31][CH:30]([NH:33][CH3:34])[CH2:29][CH2:28]1.[OH-].[Na+].Cl>O1CCOCC1.CC(C)=O>[OH-:15].[NH4+:3].[Cl:17][C:11]1[CH:10]=[C:9]([NH:8][C:6]2[N:5]=[C:4]([NH:18][CH2:19][CH:20]3[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]3)[N:3]=[C:2]([N:33]([CH3:34])[CH:30]3[CH2:31][CH2:32][N:27]([CH3:26])[CH2:28][CH2:29]3)[N:7]=2)[CH:14]=[CH:13][C:12]=1[O:15][CH3:16]

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 5663231-Methyl-4-(methylamino)piperidineHCID 21897131HCID 21897131, compound

Product 2

HCID 14923Ammonium HydroxideHCID 21896937HCID 21896937, compoundYield 17.3%

Reagents, catalysts & solvents 2

HCID 180AcetoneSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

To a sample of 102 (0.286 g, 1.0 mmol) dissolved in 1,4-dioxane (4 mL) was added a solution of N-methyl-4(methylamino)piperidine (0.15 mL, 1.0 mmol) in acetone (1 mL) followed by addition of a NaOH solution (0.0462 g, 1.0 mmol dissolved in 1 mL of H2O). The reaction mixture was allowed to stir at about 80° C. for about 2 hours. The reaction mixture was poured over crushed ice and neutralized with 10% HCl (aq). The resulting solid was collected by vacuum filtration, washed with water and dried under vacuum overnight. Column chromatography (silica gel, 96:3:1 dichloromethane:methanol:conc. ammonium hydroxide) yielded a light purple solid 103 (41 mg, 9%), mp 84° C.; HPLC: YMC Pack Pro C18, 40:30:30 [KH2PO4 (0.01M, pH 3.2): CH3OH: CH3CN], 264 nm, Rt 12.7 min, 97% purity); 1H NMR (600 MHz, CDCl3, 55° C.) δ 7.98 (s, 1H), 7.18 (S, 1H), 6.85 (d, J=9 Hz, 1H), 6.58 (s, 1H), 4.89 (s, 1H), 4.58-4.62 (m, 1H), 3.87 (s, 3H), 3.25 (t, J=6.6 Hz, 2H), 3.05 (s, 3H), 2.94 (d, J=11.4 Hz, 2H), 2.31 (s, 3H), 2.15 (S, 2H), 1.86 (dq, J=12, 4.2 Hz, 3H), 1.57-1.78 (m, 8H), 1.15-1.30 (m, 4H), 1.00 (dq, J=11.4, 3 Hz, 2H); MS (ESI): m/z 476 (37.7), 474 (M+H, 100), 410 (1.4).

Workup

  1. additionThe reaction mixture was poured
  2. customover crushed ice
  3. filtrationThe resulting solid was collected by vacuum filtration
  4. washwashed with water
  5. customdried under vacuum overnight

Sources & evidence

ORD record
ord-4375e9b6246b4019836792d6c897f9c9
Source dataset
uspto-grants-2008_02
Patent number
US07332488B2

Reaction notes

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