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

HRID 601359Notes

Reaction equation

HRID 601359 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:27])=[CH:26][C:20]=4[S:19](=[O:29])(=[O:28])[N:18]=3)[C:7]2=[O:30])[CH2:3][CH2:2]1.[N+:31]([O-])([O-:33])=[O:32].[NH4+]>S(=O)(=O)(O)O>[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:27])=[C:26]([N+:31]([O-:33])=[O:32])[C:20]=4[S:19](=[O:28])(=[O:29])[N:18]=3)[C:7]2=[O:30])[CH2:2][CH2:3]1

Participants

4

Reactant 2

HCID 22985Ammonium nitrateHCID 136358401HCID 136358401, compound

Product 1

HCID 1363584201-[(cyclopropylmethyl)amino]-4-hydroxy-3-(7-hydroxy-8-nitro-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)quinolin-2(1H)-oneYield 19.3%

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidSolvent

Procedure

A solution of the product of Example 320C (47 mg, 0.11 mmol) in concentrated sulfuric acid (2 mL) at 0° C. was treated with ammonium nitrate (10 mg, 0.13 mmol). After stirring at ambient temperature for 25 minutes, the solution was poured into ice water and the precipitate was filtered, dried, and purified by flash chromatography, eluting with 2% methanol in dichloromethane to yield the title compound (10 mg, 19%). MS (ESI−) m/z 470 (M−H)−. 1H NMR (300 MHz, DMSO-d6) δ 0.14 (d, J=4.04 Hz, 2 H) 0.41 (m, 2 H) 1.01 (m, 1 H) 2.84 (d, J=6.99 Hz, 2 H) 7.44 (m, 2 H) 7.77 (d, J=9.56 Hz, 1 H) 7.88 (t, J=7.91 Hz, 1 H) 8.08 (d, J=8.46 Hz, 1 H) 8.16 (dd, J=8.09, 1.10 Hz, 1 H) 11.83 (s, 1 H).

Workup

  1. filtrationthe precipitate was filtered
  2. customdried
  3. custompurified by flash chromatography
  4. washeluting with 2% methanol in dichloromethane

Sources & evidence

ORD record
ord-55f66404cc0a4174b3f9de84a027a1fe
Source dataset
uspto-grants-2011_03
Patent number
US07902203B2

Reaction notes

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