Hydrochloric Acid → HCID 178508008, compound

HRID 40373Notes

Reaction equation

HRID 40373 reaction equation
Cl[C:2]1[CH:3]=[CH:4][N:5]=[C:6]2[C:11]=1[N:10]=[CH:9][C:8]([N:12]=C(C1C=CC=CC=1)C1C=CC=CC=1)=[CH:7]2.Cl.C(=O)(O)[O-:28].[Na+]>O1CCCC1>[NH2:12][C:8]1[CH:7]=[C:6]2[C:11]([C:2]([OH:28])=[CH:3][CH:4]=[N:5]2)=[N:10][CH:9]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 516892Sodium BicarbonateHCID 576910588-chloro-N-(diphenylmethylene)-1,5-naphthyridin-3-amine

Product 1

HCID 178508008HCID 178508008, compoundYield 95%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A round bottom flask under nitrogen was charged with 8-chloro-N-(diphenylmethylene)-1,5-naphthyridin-3-amine (315 mg, 0.92 mmol), 2M aqueous HCl (1.42 mL, 2.84 mmol), and tetrahydrofuran (0.25M, 3.67 mL). This was stirred at RT for 30 minutes. Reaction basified with aq. sodium bicarbonate solution and product extracted with dichloromethane. This was dried over sodium sulfate and concentrated to afford orange solid; which was purified via ISCO silica gel chromatography, 40 g column, 30% (90/10/1 DCM:MeOH:NH4OH)/DCM over 40 minutes to afford 7-amino-1,5-naphthyridin-4-ol (140 mg, 95% yield) as yellow solid. MS[M+H]=180.2. Calc'd for C8H6ClN3=179.6.

Workup

  1. customReaction
  2. extractionextracted with dichloromethane
  3. dry with materialThis was dried over sodium sulfate
  4. concentrationconcentrated
  5. customto afford orange solid
  6. customwhich was purified via ISCO silica gel chromatography, 40 g column, 30% (90/10/1 DCM:MeOH:NH4OH)/DCM over 40 minutes

Sources & evidence

ORD record
ord-9ae3b34e4737407eb91f855a48c26aab
Source dataset
uspto-grants-2013_09
Patent number
US08524900B2

Reaction notes

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