2-Thieno[2,3-b]thiophenecarboxylic acid

2-Thieno[2,3-b]thiophenecarboxylic acid - Names and Identifiers

Name	thieno[2,3-b]thiophene-2-carboxylic acid
Synonyms	2-Thieno[2,3-b]thiophenecarboxylic acid thieno[2,3-b]thiophene-5-carboxylic acid thieno[2,3-b]thiophene-2-carboxylic acid THIENO[2,3-B]THIOPHENE-2-CARBOXYLIC ACID
CAS	14756-75-3
InChI	InChI=1/C7H4O2S2/c8-6(9)5-3-4-1-2-10-7(4)11-5/h1-3H,(H,8,9)

2-Thieno[2,3-b]thiophenecarboxylic acid - Physico-chemical Properties

Molecular Formula	C7H4O2S2
Molar Mass	184.24
Density	1.601±0.06 g/cm3(Predicted)
Melting Point	236 °C
Boling Point	389.5±22.0 °C(Predicted)
Flash Point	189.36°C
Vapor Presure	0mmHg at 25°C
pKa	3.41±0.30(Predicted)
Storage Condition	2-8°C(protect from light)
Refractive Index	1.77

2-Thieno[2,3-b]thiophenecarboxylic acid - Introduction

thieno[2,3-b]thiophene-2-carboxylic acid is an organic compound with the chemical formula C8H4O2S2. The following is a description of the nature, use, preparation and safety information of thieno[2,3-b]thiophene-2-carboxylic acid:

Nature:
- thieno[2,3-b]thiophene-2-carboxylic acid is a yellow solid.
-It has low solubility and is soluble in organic solvents such as dichloromethane and tetrahydrofuran.
- thieno[2,3-b]thiophene-2-carboxylic acid has a strong aromatic odor.

Use:
- thieno[2,3-b]thiophene-2-carboxylic acid is often used as an intermediate and raw material in organic synthesis.
-It can be used to synthesize various organic compounds containing thiophene ketone and carboxylic acid functional groups, such as polymers and materials.

Method:
- thieno[2,3-b]thiophene-2-carboxylic acid can be prepared by the reaction of thiophene and isothiocyanate.
-The specific preparation method can use thiophene and isothiocyanate to react under alkaline conditions to generate thiophenone, and then convert thiophenone into thieno through catalytic oxidation reaction [2,3-b]thiophene-2-carboxylic acid.

Safety Information:
- thieno[2,3-b]thiophene-2-carboxylic acid has no special safety risk under normal use conditions.
-During operation, follow laboratory safety procedures and take appropriate personal protective measures, such as wearing protective glasses, gloves and lab clothes.
-When storing, keep thieno[2,3-b]thiophene-2-carboxylic acid in a closed container, away from fire and oxidizing agents.

Last Update：2024-04-10 22:29:15