Acetic Acid → HCID 136130844, compound

HRID 1968008Notes

Reaction equation

HRID 1968008 reaction equation
[O:1]=[C:2]1[C:11]2[CH:10]=[CH:9][CH:8]=[C:7]3[NH:12][CH:13]([C:21]4[CH:22]=[C:23]([CH:26]=[CH:27][CH:28]=4)[CH:24]=O)[CH:14]([C:15]4[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=4)[C:5]([C:6]=23)=[N:4][NH:3]1.CO.[CH3:31][NH:32][CH3:33].C([BH3-])#N.[Na+].C(O)(=O)C>CO>[CH3:31][N:32]([CH2:24][C:23]1[CH:22]=[C:21]([CH:13]2[NH:12][C:7]3[C:6]4[C:5](=[N:4][NH:3][C:2](=[O:1])[C:11]=4[CH:10]=[CH:9][CH:8]=3)[CH:14]2[C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH:28]=[CH:27][CH:26]=1)[CH3:33]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 5003444Sodium cyanoborohydrideHCID 22497844Dimethylamine methanolHCID 136374706HCID 136374706, compound

Product 1

HCID 136130844HCID 136130844, compoundYield 64%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A mixture of 3-(3-oxo-9-phenyl-3,7,8,9-tetrahydro-2H-pyrido[4,3,2-de]phthalazin-8-yl)benzaldehyde (50 mg, 0.14 mmol) and IM dimethylamine methanol solution (0.5 ml, 0.41 mmol) in methanol (10 mL) was stirred at room temperature for 40 min. Then the mixture was cooled to 0° C. Sodium cyanoborohydride (13 mg, 0.20 mmol) and acetic acid (40.8 mg, 0.68 mmol) was added. After the addition, the mixture was stirred at 0° C. for 2 hr. Methanol was removed under reduced pressure. The residue was resolved with 1N hydrochloric acid and washed with ethyl acetate. The mother liquor was adjusted to pH=8 and extracted with ethyl acetate. The solvent was removed to give 8-(3-((dimethylamino)methyl)phenyl)-9-phenyl-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one (34 mg, yield 64%) as a light yellow solid. 1H-NMR (400 MHz, CD3OD) δ (ppm): 2.17 (s, 6H), 3.17-3.41 (q, 2H), 4.31 (d, J=8.0 Hz, 1H), 4.74 (d, J=8.0 Hz, 1H), 7.08-7.10 (m, 2H), 7.13-7.25 (m, 8H), 7.55-7.57 (d, J=8.0 Hz, 1H), 7.61-7.65 (m, 1H). LC-MS (ESI) m/z: 397 (M+1)+.

Workup

  1. temperatureThen the mixture was cooled to 0° C
  2. additionAfter the addition
  3. stirringthe mixture was stirred at 0° C. for 2 hr
  4. customMethanol was removed under reduced pressure
  5. washwashed with ethyl acetate
  6. extractionextracted with ethyl acetate
  7. customThe solvent was removed

Sources & evidence

ORD record
ord-d63c1a4cf5564625935e2ce8aa917168
Source dataset
uspto-grants-2013_04
Patent number
US08420650B2

Reaction notes

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