Reaktion #519564

Reaktionsgleichung

4-bromo-2-fluoroaniline

2-chlorobenzothiazole

→

N2-(4-bromo-2-fluorophenyl)-1,3-benzothiazol-2-amine

Ausbeute 99.9%

Lösungsmittel

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled to room temperature
2. 2
   EinengenThe resulting brown solution was concentrated
3. 3
   Sonstigeto give a purple solid which
4. 4
   Sonstigewas triturated with heptane

Vorschrift

To a solution of 4-bromo-2-fluoroaniline (1.00 g, 5.26 mmol) in toluene (25 mL) was added 2-chlorobenzothiazole (0.75 mL, 5.79 mmol). The purple solution was heated at 110-150° C. in a resealable tube for 66 h and then cooled to room temperature. The resulting brown solution was concentrated to give a purple solid which was triturated with heptane to afford N2-(4-bromo-2-fluorophenyl)-1,3-benzothiazol-2-amine (1.699 g, 99%) as a light purple powder. RP-HPLC (25 to 100% CH3CN in 0.1 N aqueous ammonium acetate over 10 min at 1 mL/min using a Hypersil HS C18, 250×4.6 mm column) tr=13.82 min, 95%; m/z 325 (MH+).

Quelle