Water → 5-aminoisoquinolin-1(2H)-one

HRID 1869308Notes

Reaction equation

HRID 1869308 reaction equation
[N+:1]([C:4]1[CH:13]=[CH:12][CH:11]=[C:10]2[C:5]=1[CH:6]=[CH:7][NH:8][C:9]2=[O:14])([O-])=O.[Cl-].[NH4+].O>C(O)C.O1CCCC1.[Zn]>[NH2:1][C:4]1[CH:13]=[CH:12][CH:11]=[C:10]2[C:5]=1[CH:6]=[CH:7][NH:8][C:9]2=[O:14]

Participants

7

Reactant 3

HCID 962WaterHCID 25517Ammonium ChlorideHCID 2313785-Nitro-1,2-dihydroisoquinolin-1-one

Product 1

HCID 20725-aminoisoquinolin-1(2H)-oneYield 88.1%

Reagents, catalysts & solvents 3

HCID 23994ZincCatalystHCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

268.3 mg (1.51 mmol) of 5-nitroisoquinolin-1(2H)-one is added with 376.5 mg of ammonium chloride and 2.6 ml of water in 14 ml of ethanol and 5.4 ml of tetrahydrofuran. After addition in portions of 1.23 g of zinc powder (heating to 30 to 35° C.), it is stirred for two hours. The reaction mixture is suctioned off through a glass-fiber filter and rewashed with ethyl acetate. After the filtrate is washed with water and saturated sodium chloride solution, the organic phase is dried as usual. Filtering off the desiccant and spinning off the solvent produce 196.5 mg (88.1%) of the desired amine.

Workup

  1. filtrationfilter
  2. washAfter the filtrate is washed with water and saturated sodium chloride solution
  3. customthe organic phase is dried as usual
  4. filtrationFiltering off the desiccant and

Sources & evidence

ORD record
ord-0e14d71f5c6a41ba8cd6b9a7f6d1410a
Source dataset
uspto-grants-2009_12
Patent number
US07638515B2

Reaction notes

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