Sodium Sulfite → 5-[4-(azetidin-3-yl)phenyl]-6-chloro-1H-indole-3-carboxylic acid

HRID 1054786Notes

Reaction equation

HRID 1054786 reaction equation
[NH:1]1[CH2:4][CH:3]([C:5]2[CH:10]=[CH:9][C:8]([C:11]3[CH:12]=[C:13]4[C:17](=[CH:18][C:19]=3[Cl:20])[NH:16][CH:15]=[C:14]4[CH:21]=[O:22])=[CH:7][CH:6]=2)[CH2:2]1.P([O-])(O)(O)=[O:24].[Na+].Cl([O-])=O.[Na+].S([O-])([O-])=O.[Na+].[Na+]>CC(=CC)C.CC(O)(C)C.O>[NH:1]1[CH2:4][CH:3]([C:5]2[CH:10]=[CH:9][C:8]([C:11]3[CH:12]=[C:13]4[C:17](=[CH:18][C:19]=3[Cl:20])[NH:16][CH:15]=[C:14]4[C:21]([OH:24])=[O:22])=[CH:7][CH:6]=2)[CH2:2]1

Participants

6

Reactant 4

HCID 24437Sodium SulfiteHCID 23668197Sodium ChloriteHCID 23672064Monosodium phosphateHCID 866987735-[4-(azetidin-3-yl)phenyl]-6-chloro-1H-indole-3-carbaldehyde

Product 1

HCID 866987745-[4-(azetidin-3-yl)phenyl]-6-chloro-1H-indole-3-carboxylic acidYield 10.2%

Reagents, catalysts & solvents 1

HCID 230840282-Methyl-2-butene t-butanol waterSolvent

Procedure

To 5-[4-(azetidin-3-yl)phenyl]-6-chloro-1H-indole-3-carbaldehyde (94 mg, 0.30 mmol) in 2-methyl-2-butene/t-BuOH/H2O (v/v/v=1/1/1, 4 mL) was added sodium dihydrogen phosphate (364 mg, 3.04 mmol) and sodium chlorite (274 mg, 3.04 mmol) at room temperature. The resulting mixture was stirred at room temperature for 24 hours. To the reaction mixture was added sodium sulfite (383 mg, 3.04 mmol), then concentrated in vacuo and purified via reverse phase HPLC to give the title compound (10 mg, 10% yield). 1H NMR (400 MHz, CD3OD) δ 8.03-80.4 (d, 2 H), 7.62 (s, 1 H), 7.48-7.52 (m, 4 H), 4.44-4.48 (m, 2 H), 4.32-4.34 (m, 3 H).

Workup

  1. concentrationconcentrated in vacuo
  2. custompurified via reverse phase HPLC

Sources & evidence

ORD record
ord-4acf7e2388934e91ba3ebdd460d31c8d
Source dataset
uspto-grants-2016_07
Patent number
US09394285B2

Reaction notes

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