4-Chloro-7-fluoroquinoline-3-carboxylic acid ethyl ester synthesis
- Product Name:4-Chloro-7-fluoroquinoline-3-carboxylic acid ethyl ester
- CAS Number:26893-13-0
- Molecular formula:C12H9ClFNO2
- Molecular Weight:253.66
26892-97-7
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Yield:26893-13-0 89%
Reaction Conditions:
with trichlorophosphate at 100; for 0.333333 h;
Steps:
A mixture of 7-fluoro-4-hydroxyquinoline-3-carboxylic acid ethyl ester (2.45 g,10.0 mmol; see step (b) above) and POCl3 (3 mL) was stirred at 100 0C for 20 min, cooled and concentrated. The residue was washed with heptane (3x30 mL) and dried. Yield 2.26 g (89 %) as an off-white solid.1H-NMR (CDCl35 400 MHz) δ 9.52 (IH5 s), 8.73 (IH5 dd), 8.32 (IH5 dd), 7.82 (IH, ddd), 4.57 (2H5 q), 1.51 (3H5 1).
References:
WO2007/51982,2007,A1 Location in patent:Page/Page column 44
53977-12-1
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372-19-0
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87-13-8
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![diethyl {[(3-fluorophenyl)amino]methylidene}propanedioate](/CAS/20180703/GIF/26832-95-1.gif)
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