BenzenaMine,4-(ethenylsulfonyl)- synthesis
- Product Name:BenzenaMine,4-(ethenylsulfonyl)-
- CAS Number:25781-90-2
- Molecular formula:C8H9NO2S
- Molecular Weight:183.23
5535-55-7
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25781-90-2
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Yield:25781-90-2 19 g
Reaction Conditions:
with tin(II) chloride dihdyrate in ethanol at 60; for 1 h;
Steps:
4 Preparation Example 4
34.4 g of the product of Preparation Example 3 (1 mol), 145.6 g of tin chloride dihydrate (4 mol parts),After mixing with 340 mL of ethanol, it was heated to 60 ° C and reacted for about 1 hour. After the reaction, the mixture was cooled to room temperature, and concentrated to remove ethanol. Then, 500 mL of ethyl acetate and 20 mL of triethylamine were added to precipitate a large amount of white salts. After filtering with diatomaceous earth, the filtrate was collected.Further, 5 mL of triethylamine was added to the filtrate to confirm whether or not a salt was produced. If there is, the salt is re-filtered with diatomaceous earth. The above-mentioned addition of triethylamine - filtration with diatomaceous earth - collection of the filtrate continued until no more salts were produced.The filtrate was then extracted with ethyl acetate and water.After taking the organic layer, the water is concentrated,It was evacuated at room temperature for 12 hours to give 19.0 g of a pale brown solid.
References:
TW2019/27920,2019,A Location in patent:Paragraph 0024-0025
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100-00-5
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$14.14/5gm:
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13287-76-8
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25781-90-2
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