Reaktion #2286307

Reaktionsgleichung

isopropyl iodide

acetic acid 2-[3,5-dibromo-4-(6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester

Acetic acid 2-[3,5-dibromo-4-(6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester

→

2-[3,5-dibromo-4-(1-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester

Ausbeute 79.0%

acetic acid 2-[3,5-dibromo-4-(1-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester

Ausbeute 79.0%

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThis compound was prepared by a similar method to
2. 2
   SonstigeThe product was purified by column chromatography
3. 3
   Wascheneluted with 10% ethyl acetate in hexanes to 100% ethyl acetate

Vorschrift

This compound was prepared by a similar method to that described in Example 10, Step 2 except that isopropyl iodide was used in place of methyl iodide and acetic acid 2-[3,5-dibromo-4-(6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester (39) was used in place of acetic acid 2-[3,5-dichloro-4-(5-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester (34). The method was similar except that the reaction was heated to 50° C. for 24 h. The product was purified by column chromatography using silica gel eluted with 10% ethyl acetate in hexanes to 100% ethyl acetate to afford 2-[3,5-dibromo-4-(1-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester (40) (79%) as a white solid; LRMS for C17H18Br2N2O4 (M+CH3CN+H) m/z=516, Molecular Weight=474.1520; Exact Mass=471.9633

Quelle