Hydrazine hydrate (1:1) → HCID 136385216, compound

HRID 1967912Notes

Reaction equation

HRID 1967912 reaction equation
[C:1]([N:6]1[CH2:11][CH2:10][N:9]([C:12]([C:14]2[CH:15]=[C:16]([CH:20]3[C:29](=O)[C:28]4[C:27]([C:31](OC)=[O:32])=[CH:26][CH:25]=[CH:24][C:23]=4[NH:22][CH:21]3[C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[CH:17]=[CH:18][CH:19]=2)=[O:13])[CH2:8][CH2:7]1)(=O)[CH:2]([CH3:4])[CH3:3].[OH2:41].[NH2:42][NH2:43]>CO>[C:1]([N:6]1[CH2:7][CH2:8][N:9]([C:12]([C:14]2[CH:15]=[C:16]([CH:20]3[C:29]4=[N:42][NH:43][C:31](=[O:32])[C:27]5[CH:26]=[CH:25][CH:24]=[C:23]([C:28]=54)[NH:22][CH:21]3[C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=3)[CH:17]=[CH:18][CH:19]=2)=[O:13])[CH2:10][CH2:11]1)(=[O:41])[CH:2]([CH3:4])[CH3:3]

Participants

4

Reactant 2

HCID 24654Hydrazine hydrate (1:1)HCID 67259314HCID 67259314, compound

Product 1

HCID 136385216HCID 136385216, compoundYield 11%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
25 °C

Procedure

A mixture of methyl 3-(3-(4-isobutyrylpiperazine-1-carbonyl)phenyl)-4-oxo-2-phenyl-1,2,3,4-tetrahydroquinoline-5-carboxylate (110 mg, 0.20 mmol) in hydrazine monohydrate (5 mL) and methanol (2 mL) was stirred at 25° C. for 4 hr. The mixture was extracted with ethyl acetate (50 mL×3). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated to give crude product. The crude product was purified by prep-HPLC to give 9-(3-(4-isobutyrylpiperazine-1-carbonyl)phenyl)-8-phenyl-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one (12 mg, yield: 11%) as a white solid. 1H-NMR (400 MHz, CD3OD) δ: 0.96-0.98 (d, J=6.8 Hz, 6H), 2.68-2.95 (m, 2H), 3.28-3.55 (m, 7H), 4.19-4.22 (d, J=10.0 Hz, 1H), 4.54-4.57 (d, J=10.4 Hz, 1H), 7.03-7.20 (m, 10H), 7.40-7.50 (m, 2H); LC-MS (ESI) m/z: 522 (M+1)+.

Workup

  1. extractionThe mixture was extracted with ethyl acetate (50 mL×3)
  2. washThe combined organic layers were washed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated
  5. customto give crude product
  6. customThe crude product was purified by prep-HPLC

Sources & evidence

ORD record
ord-08034ddeaf0048158a655f6181cdb924
Source dataset
uspto-grants-2013_04
Patent number
US08420650B2

Reaction notes

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