Ammonium Hydroxide → HCID 68283486, compound

HRID 2408622Notes

Reaction equation

HRID 2408622 reaction equation
C(O[C:4](=[O:29])[C:5]1[CH:10]=[CH:9][C:8]([CH:11]([OH:28])[CH2:12][N:13]2[C:21]3[CH:20]=[CH:19][C:18]([CH3:22])=[CH:17][C:16]=3[C:15]3[CH2:23][N:24]([CH3:27])[CH2:25][CH2:26][C:14]2=3)=[CH:7][CH:6]=1)C.[OH-].[NH4+:31]>O>[CH3:27][N:24]1[CH2:25][CH2:26][C:14]2[N:13]([CH2:12][CH:11]([C:8]3[CH:7]=[CH:6][C:5]([C:4]([NH2:31])=[O:29])=[CH:10][CH:9]=3)[OH:28])[C:21]3[CH:20]=[CH:19][C:18]([CH3:22])=[CH:17][C:16]=3[C:15]=2[CH2:23]1

Participants

4

Reactant 2

HCID 14923Ammonium HydroxideHCID 68283691HCID 68283691, compound

Product 1

HCID 68283486HCID 68283486, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of 4-[2-(2,8-dimethyl-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-1-hydroxy-ethyl]-benzoicacid ethyl ester (90 mg, 0.229 mmol) in 25% ammonium hydroxide solution (5 mL) was stirred at 120° C. for 1 h. The progress of reaction was monitored by NMR and LCMS. The reaction mixture was cooled to RT, diluted with water and extracted with EtOAc (3×30 mL). The combined organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by reverse phase HPLC to yield 4-[2-(2,8-dimethyl-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-1-hydroxy-ethyl]-benzamide (3 mg) which was separated by chiral preparative HPLC to obtain 139a and 139b. 1H NMR (CD3OD, TFA salt) δ (ppm): 7.18 (t, 2H), 7.4 (d, 1H), 7.31 (d, 2H), 7.23 (s, 1H), 7.03 (t, 1H), 5.08 (t, 1H), 4.64 (dd, 1H), 4.33 (m, 2H), 4.21 (dd, 1H), 3.71 (t, 1H), 3.45 (bs, 1H), 3.12 (m, 1H), 3.09 (d, 3H), 2.6 (d, 1H), 2.41 (s, 3H).

Workup

  1. customThe progress of reaction
  2. extractionextracted with EtOAc (3×30 mL)
  3. dry with materialThe combined organic layer was dried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by reverse phase HPLC

Sources & evidence

ORD record
ord-ce2e50f7fb1d44e8a5b643ea84c8f21f
Source dataset
uspto-grants-2014_08
Patent number
US08815843B2

Reaction notes

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