Reaktion #7578

Reaktionsgleichung

hydrogen chloride

potassium carbonate

potassium iodide

4-chloro-7-hydroxy-6-methoxycinnoline

potassium carbonate

1-chloro-3-morpholinopropane

1-chloro-3-morpholinopropane

→

4-chloro-6-methoxy-7-(3-morpholinopropoxy)cinnoline

Lösungsmittel

water methanol

isopropanol

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstige(prepared
2. 2
   Sonstige(prepared
3. 3
   Temperaturwas cooled
4. 4
   workup.ADDITIONThe solution was poured onto a Diaion (trade mark of Mitsubishi) HP20SS column

Vorschrift

The starting material 4-chloro-6-methoxy-7-(3-morpholinopropoxy)cinnoline hydrochloride was obtained by adding 1-chloro-3-morpholinopropane (190 mg, 0.95 mmol), (prepared as described in U.S. Pat. No. 4,004,007), to a suspension of 4-chloro-7-hydroxy-6-methoxycinnoline (0.2 g, 0.95 mmol), (prepared as described for the starting material in Example 10), in DMF (5 ml) containing potassium carbonate (327 mg, 2.3 mmol) and potassium iodide (15 mg, 0.095 mmol). After heating at 80° C. for 2 hours, potassium carbonate (65 mg, 0.47 mmol) and more 1-chloro-3-morpholinopropane (95 mg, 0.47 mmol) were added. After stirring for 4 hours at 80° C. the reaction mixture was cooled and 7M hydrogen chloride in isopropanol (407 μl) was added. The solution was poured onto a Diaion (trade mark of Mitsubishi) HP20SS column, using water/methanol (100/0 to 0/100 as a gradient) to give 4-chloro-6-methoxy-7-(3-morpholinopropoxy)cinnoline as an hydrochloride salt (175 mg, 44%).

Quelle