Hydrochloric Acid → 7-Methyl-1,3-benzothiazol-6-amine

HRID 1637345Notes

Reaction equation

HRID 1637345 reaction equation
Cl[Sn]Cl.Cl.[CH3:5][C:6]1[C:14]2[S:13][CH:12]=[N:11][C:10]=2[CH:9]=[CH:8][C:7]=1[N+:15]([O-])=O.[OH-].[Na+]>>[CH3:5][C:6]1[C:14]2[S:13][CH:12]=[N:11][C:10]=2[CH:9]=[CH:8][C:7]=1[NH2:15]

Participants

5

Reactant 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 24479Stannous ChlorideHCID 125888347-Methyl-6-nitro-1,3-benzothiazole

Product 1

HCID 218751347-Methyl-1,3-benzothiazol-6-amineYield 113.1%

Conditions

Temperature
25 °C

Procedure

To a solution of SnCl2 (3.0 g, 3.8 mmol) and 10 mL of con.HCl was added 7-methyl-6-nitrobenzothiazole (0.68 g, 3.5 mmol) in a portion and the resulting reaction mixture was stirred for 1 h at 25° C. The reaction mixture was basified with aqueous NaOH and extracted with EtOAc and CHCl3. Combined organic layers were dried over Na2SO4 and concentrated in vacuo, yielding an oil (0.65 g, >95%) which was identified as the desired amine and subjected to a following reaction without further purification.

Workup

  1. customthe resulting reaction mixture
  2. extractionextracted with EtOAc and CHCl3
  3. dry with materialCombined organic layers were dried over Na2SO4
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-48bfb96119344ade8edcfe2f7f91d483
Source dataset
uspto-grants-2000_03
Patent number
US06040451

Reaction notes

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