Ethyl p-methylbenzenesulfonate → 2-Amino-3-ethyl-6-methoxybenzothiazolium p-toluenesulfonate

HRID 2260340

Reaction equation

HRID 2260340 reaction equation
[NH2:1][C:2]1[S:3][C:4]2[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[CH:7][C:5]=2[N:6]=1.[C:13]1([CH3:25])[CH:18]=[CH:17][C:16]([S:19]([O:22]CC)(=[O:21])=[O:20])=[CH:15][CH:14]=1>CC(C)=O>[C:13]1([CH3:25])[CH:14]=[CH:15][C:16]([S:19]([O-:22])(=[O:20])=[O:21])=[CH:17][CH:18]=1.[NH2:1][C:2]1[S:3][C:4]2[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[CH:7][C:5]=2[N+:6]=1[CH2:13][CH3:14]

Participants

4

Reactant 2

HCID 6638Ethyl p-methylbenzenesulfonateHCID 156302-Amino-6-methoxybenzothiazole

Product 1

HCID 199622022-Amino-3-ethyl-6-methoxybenzothiazolium p-toluenesulfonate

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Conditions

Temperature
120 °C

Procedure

3.6 g of 2-amino-6-methoxybenzothiazole and 6.0 g of ethyl p-toluenesulfonate were fed into a 200 ml three-necked flask. The resultant mixture was stirred under heating on an oil bath at 120° C. for 3 hours. Acetone was added to the reaction mixture and the resultant mixture was stirred at room temperature for 1 hour. The crystals thus formed were suction-filtered and washed with acetone to obtain the intended compound.

Workup

  1. customThe crystals thus formed
  2. filtrationwere suction-filtered
  3. washwashed with acetone
  4. customto obtain the intended compound

Sources & evidence

ORD record
ord-398e82ff3fd84fe5917a4cc22f1827fc
Source dataset
uspto-grants-1995_12
Patent number
US05476945

Linked notes

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