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2-chloro-1-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)ethanone synthesis
- Product Name:2-chloro-1-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)ethanone
- CAS Number:943126-72-5
- Molecular formula:C11H10ClFO2
- Molecular Weight:228.65
![Sulfur, [2-(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)-2-oxoethylidene]dimethyloxo-](/CAS/20200119/GIF/1017878-51-1.gif)
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Yield: 78%
Reaction Conditions:
Stage #1:dimethylsulfoxonium-2-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)-2-oxoethylide with methanesulfonic acid;lithium chloride in tetrahydrofuran at 0 - 70; for 18.8333 h;
Stage #2: with water;sodium hydrogencarbonate in tetrahydrofuran
Steps:
6
Example 6
References:
ZACH SYSTEM S.P.A. WO2008/40528, 2008, A2 Location in patent:Page/Page column 12-13
![methyl 6-fluoro-3,4-dihydro-2H-chromene-2-carboxylate](/CAS/GIF/874649-82-8.gif)
874649-82-8
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$9.00/250mg
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74-97-5
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![6-Fluorochromone-2-carboxylic acid](/CAS/GIF/99199-59-4.gif)
99199-59-4
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$34.46/1g
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![1-(5-Fluoro-2-hydroxyphenyl)-1-ethanone](/CAS/GIF/394-32-1.gif)
394-32-1
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$9.00/5g
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![6-Fluorochromane-2-carbonyl chloride](/CAS/20140525/GIF/CB92691485.gif)
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