Hydrazine hydrate (1:1) → 8-(4-(Diethoxymethyl)phenyl)-9-(4-fluorophenyl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one

HRID 1467631Notes

Reaction equation

HRID 1467631 reaction equation
[CH2:1]([O:3][CH:4]([O:34][CH2:35][CH3:36])[C:5]1[CH:10]=[CH:9][C:8]([CH:11]2[CH:20]([C:21]3[CH:26]=[CH:25][C:24]([F:27])=[CH:23][CH:22]=3)[C:19](=O)[C:18]3[C:17]([C:29]([O:31]CC)=O)=[CH:16][CH:15]=[CH:14][C:13]=3[NH:12]2)=[CH:7][CH:6]=1)[CH3:2].O.[NH2:38][NH2:39]>CO>[CH2:1]([O:3][CH:4]([O:34][CH2:35][CH3:36])[C:5]1[CH:6]=[CH:7][C:8]([CH:11]2[NH:12][C:13]3[C:18]4[C:19](=[N:38][NH:39][C:29](=[O:31])[C:17]=4[CH:16]=[CH:15][CH:14]=3)[CH:20]2[C:21]2[CH:26]=[CH:25][C:24]([F:27])=[CH:23][CH:22]=2)=[CH:9][CH:10]=1)[CH3:2]

Participants

4

Reactant 2

HCID 24654Hydrazine hydrate (1:1)HCID 67258671Ethyl 2-(4-(diethoxymethyl)phenyl)-3-(4-fluorophenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate

Product 1

HCID 1363746668-(4-(Diethoxymethyl)phenyl)-9-(4-fluorophenyl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-oneYield 76%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

The crude compound ethyl 2-(4-(diethoxymethyl)phenyl)-3-(4-fluorophenyl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (4.2 g, 8.54 mmol) and hydrazine monohydrate (5 mL) were added in methanol (60 mL) and the mixture was stirred at room temperature for 16 hr. The resulting mixture was concentrated under reduced pressure to a volume of 40 mL and then filtered to obtain the crude title compound (3.0 g, yield 76%). LC-MS (ESI) m/z: 460 (M+1)+.

Workup

  1. concentrationThe resulting mixture was concentrated under reduced pressure to a volume of 40 mL
  2. filtrationfiltered

Sources & evidence

ORD record
ord-515f945f5fee46ca99d0d3f5995d207b
Source dataset
uspto-grants-2015_04
Patent number
US08999987B2

Reaction notes

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