Sodium Dithionite → HCID 9798341, compound

HRID 2182502Notes

Reaction equation

HRID 2182502 reaction equation
[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([N+:17]([O-])=O)=[CH:14][CH:15]=2)[C:10]([C:20]2[O:21][C:22]([C:25]([O:27][CH3:28])=[O:26])=[CH:23][CH:24]=2)=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.S(S([O-])=O)([O-])=O.[Na+].[Na+]>CO.C1COCC1.O>[NH2:17][C:13]1[CH:12]=[C:11]2[C:16](=[CH:15][CH:14]=1)[N:8]([CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)[N:9]=[C:10]2[C:20]1[O:21][C:22]([C:25]([O:27][CH3:28])=[O:26])=[CH:23][CH:24]=1

Participants

5

Reactant 2

HCID 24489Sodium DithioniteHCID 9821069HCID 9821069, compound

Product 1

HCID 9798341HCID 9798341, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 21899815MeOH tetrahydrofuranSolvent

Procedure

0.9 g (2.4 mmol) of 1-benzyl-3-(5-methoxycarbonyl-2-furyl)-5-nitroindazole were dissolved in 100 ml of methanol/THF (1:1) by gentle warming, a solution of 2.5 g (14.4 mmol) of sodium dithionite in 50 ml of water was added and the mixture was stirred at RT for 16 h. For work-up, the mixture was concentrated and the residue was chromatographed over silica gel using dichloromethane/methanol (98.5:1.5). This gave 140 mg (17%) of the title compound. m.p.: 195-196° C.

Workup

  1. concentrationFor work-up, the mixture was concentrated
  2. customthe residue was chromatographed over silica gel

Sources & evidence

ORD record
ord-1de07ed904d94ee194dbd9bcf55c15c4
Source dataset
uspto-grants-2005_05
Patent number
US06897232B2

Reaction notes

Loading…