Hydrazine hydrate (1:1) → HCID 178514898, compound

HRID 217399Notes

Reaction equation

HRID 217399 reaction equation
O[C:2]1[C:11]2[C:6](=[N:7][CH:8]=[CH:9][CH:10]=2)[N:5]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([O:18][C:19]([F:22])([F:21])[F:20])[CH:13]=2)[C:4](=[O:23])[C:3]=1[C:24](=O)[CH2:25][C:26]1[CH:31]=[CH:30][C:29](OC(F)(F)F)=[CH:28][CH:27]=1.[OH2:38].[NH2:39][NH2:40].C(=O)([O-])O.[Na+]>CN(C=O)C>[F:20][C:19]([F:22])([F:21])[O:38][C:29]1[CH:28]=[CH:27][C:26]([CH2:25][C:24]2[C:3]3[C:4](=[O:23])[N:5]([C:12]4[CH:17]=[CH:16][CH:15]=[C:14]([O:18][C:19]([F:22])([F:21])[F:20])[CH:13]=4)[C:6]4[N:7]=[CH:8][CH:9]=[CH:10][C:11]=4[C:2]=3[NH:40][N:39]=2)=[CH:31][CH:30]=1

Participants

5

Reactant 3

HCID 24654Hydrazine hydrate (1:1)HCID 516892Sodium BicarbonateHCID 86630462HCID 86630462, compound

Product 1

HCID 178514898HCID 178514898, compoundYield 58%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
105 °C

Procedure

To a suspension of 4-hydroxy-1-(3-trifluoromethoxyphenyl)-3-(4-trifluoromethoxyphenylacetyl)-1,8-naphthyridin-2(1H)-one (524 mg, 1.0 mmol) produced in Synthesis Example 25 in DMF (5 mL) was added hydrazine monohydrate (purity of 80%, 194 μL), and the mixture was stirred at 100 to 110° C. for 2 hours. To the reaction solution was added a sodium hydrogencarbonate aqueous solution. The resulting precipitate was separated by filtration, recrystallized from ethanol, and dried to give 3-(4-trifluoromethoxybenzyl)-5-(3-trifluoromethoxyphenyl)-1H-pyrazolo[4,3-c][1,8]naphthyridin-4(5H)-one (301 mg, yield 58%).

Workup

  1. customThe resulting precipitate was separated by filtration
  2. customrecrystallized from ethanol
  3. customdried

Sources & evidence

ORD record
ord-b5b64a63c8f14efdbf7a7921a30bf4c7
Source dataset
uspto-grants-2012_06
Patent number
US08193356B2

Reaction notes

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