METHYL 2-METHYL-4-HYDROXY-2H-THIENO[2,3-E]-1,2-THIAZINE-3-CARBOXYLATE-1,1-DIOXIDE synthesis
- Product Name:METHYL 2-METHYL-4-HYDROXY-2H-THIENO[2,3-E]-1,2-THIAZINE-3-CARBOXYLATE-1,1-DIOXIDE
- CAS Number:59804-25-0
- Molecular formula:C9H9NO5S2
- Molecular Weight:275.3
![METHYL 4-HYDROXY-2H-THIENO[2,3-E]-1,2-THIAZINE-3-CARBOXYLATE-1,1-DIOXIDE](/CAS/GIF/98827-44-2.gif)
98827-44-2
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$126.00/500mg
77-78-1
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$19.69/1ml
59804-25-0
129 suppliers
$250.00/250mg
Yield: 86%
Reaction Conditions:
with sodium hydroxide in methanol at 20; for 3 h;Concentration;
Steps:
1.3 3. methyl 4-hydroxy-2-methyl-2H-thieno(2,3-e)-1,2-thiazine-3-carboxylate-1,1-dioxide
5.3 g of TNXK-3 and 20 ml of methanol were added to a reaction flask. Stir at room temperature. Separately add dimethyl sulfate 3.7 g methanol (5 ml) solution and 50% sodium hydroxide solution (5 ml). After the completion of the dropping, room temperature reaction 3 hours, cooling to 10 degrees, the water 50 ml dilution, use 10% hydrochloric acid to the PH is 3. Filtering, the filter cake after the water washing, drying, recrystallization with methanol, 60 degrees decompression drying, getting white solid 4.8 g, yield 86%.
References:
Jiangxi Yong Tong Technology Co., Ltd.;Liu Zhongchun CN107141308, 2017, A Location in patent:Paragraph 0051-0055; 0065; 0069; 0075; 0079; 0085; 0089
59337-92-7
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$10.00/5g
59804-25-0
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$250.00/250mg
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106820-63-7
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$12.72/1gm:
59804-25-0
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$250.00/250mg
![Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-](/CAS/20210305/GIF/1000210-73-0.gif)
1000210-73-0
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106820-62-6
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59804-25-0
129 suppliers
$250.00/250mg
98827-44-2
77 suppliers
$126.00/500mg
74-88-4
346 suppliers
$15.00/10g
59804-25-0
129 suppliers
$250.00/250mg