![](/CAS/20180711/GIF/211-53-0.gif)
thieno[3,2-g][1]benzothiophene synthesis
- Product Name:thieno[3,2-g][1]benzothiophene
- CAS Number:211-53-0
- Molecular formula:C10H6S2
- Molecular Weight:190.28
![[2,2'-bithiophene]-3,3'-dicarbaldehyde](/CAS/20180703/GIF/19690-70-1.gif)
19690-70-1
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![thieno[3,2-g][1]benzothiophene](/CAS/20180711/GIF/211-53-0.gif)
211-53-0
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Yield:211-53-0 70%
Reaction Conditions:
with titanium tetrachloride;zinc in tetrahydrofuran; for 1 h;Reflux;
Steps:
I.1.2 (2) Synthesis of Sub-1-1-b
At -15 ° C, titanium tetrachloride (36.35 ml, 191.65 mmol) and zinc (8.35 g, 127.77 mmol) were added to THF (1000 ml) and refluxed for 2 hours. Subsequently, Sub-1-1-a (7.10 g, 31.94 mmol) dissolved in THF (50 ml) was slowly added thereto and refluxed for 1 hour. After the reaction is completed, the temperature of the reactant is cooled to room temperature, ice water and aqueous NaHCO 3 solution are added, extracted with EA, and washed with water. The organic layer was dried over MgSO 4, concentrated, and the concentrate was separated using a silica gel column to give 4.25 g (70%) of product
References:
KR2019/138433,2019,A Location in patent:Paragraph 0093; 0100; 0104-0105
![Benzo[2,1-b:3,4-b']dithiophene-4,4,5,5-tetracarboxylic acid, tetraethyl ester (9CI)](/CAS/20210305/GIF/182952-31-4.gif)
182952-31-4
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![thieno[3,2-g][1]benzothiophene](/CAS/20180711/GIF/211-53-0.gif)
211-53-0
3 suppliers
inquiry