Ammonium Chloride → 3-(8-amino-7-hydroxy-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-1-[(cyclopropylmethyl)amino]-4-hydroxyquinolin-2(1H)-one

HRID 601363Notes

Reaction equation

HRID 601363 reaction equation
[CH:1]1([CH2:4][NH:5][N:6]2[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[C:9]([OH:16])=[C:8]([C:17]3[NH:22][C:21]4[CH:23]=[CH:24][C:25]([OH:30])=[C:26]([N+:27]([O-])=O)[C:20]=4[S:19](=[O:32])(=[O:31])[N:18]=3)[C:7]2=[O:33])[CH2:3][CH2:2]1.[Cl-].[NH4+]>CO.O1CCCC1.O.[Fe]>[NH2:27][C:26]1[C:20]2[S:19](=[O:31])(=[O:32])[N:18]=[C:17]([C:8]3[C:7](=[O:33])[N:6]([NH:5][CH2:4][CH:1]4[CH2:2][CH2:3]4)[C:15]4[C:10]([C:9]=3[OH:16])=[CH:11][CH:12]=[CH:13][CH:14]=4)[NH:22][C:21]=2[CH:23]=[CH:24][C:25]=1[OH:30]

Participants

5

Reactant 2

HCID 25517Ammonium ChlorideHCID 1363584201-[(cyclopropylmethyl)amino]-4-hydroxy-3-(7-hydroxy-8-nitro-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)quinolin-2(1H)-one

Product 1

HCID 1363471543-(8-amino-7-hydroxy-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-1-[(cyclopropylmethyl)amino]-4-hydroxyquinolin-2(1H)-oneYield 53.9%

Reagents, catalysts & solvents 2

HCID 23925IronCatalystHCID 21892291Methanol tetrahydrofuran waterSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of the product of Example 381 (10 mg, 0.021 mmol), iron powder (5.9 mg, 0.105 mmol), and ammonium chloride (1.3 mg, 0.024 mmol) in methanol:tetrahydrofuran:water (2:2:1, 2 mL) was heated at 60° C. for 1 hour. The solution filtered through Celite® and washed with tetrahydrofuran. The solution was evaporated under reduced pressure and the residue was triturated with ethyl acetate, filtered and washed with water and dried to give title compound (5 mg, 53%). 1H NMR (300 MHz, DMSO-d6) δ 0.13 (d, J=3.68 Hz, 2 H) 0.40 (d, J=7.72 Hz, 2 H) 1.02 (m, 1 H) 2.85 (d, J=5.52 Hz, 2 H) 5.40 (s, 2 H) 6.46 (s, 1 H) 6.65 (d, J=8.46 Hz, 1 H) 7.00 (d, J=8.09 Hz, 1 H) 7.45 (t, J=7.35 Hz, 1 H) 7.89 (t, J=7.17 Hz, 1 H) 8.10 (d, J=8.46 Hz, 1 H) 8.17 (d, J=8.82 Hz, 1 H) 10.13 (s, 1 H) 13.82 (s, 1 H) 15.17 (s, 1 H). MS (ESI−) m/z 440 (M−H)−.

Workup

  1. filtrationThe solution filtered through Celite®
  2. washwashed with tetrahydrofuran
  3. customThe solution was evaporated under reduced pressure
  4. customthe residue was triturated with ethyl acetate
  5. filtrationfiltered
  6. washwashed with water
  7. customdried

Sources & evidence

ORD record
ord-2e9d373785e74f45946ecdbbb59a58e0
Source dataset
uspto-grants-2011_03
Patent number
US07902203B2

Reaction notes

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