HYDROXYMETHYL EDOT Chemical Properties

Melting point:

42-46 °C

Boiling point:

120°C/0.05mmHg(lit.)

Density 

1.362±0.06 g/cm3(Predicted)

Flash point:

110 °C

storage temp. 

2-8°C

pka

14.10±0.10(Predicted)

form 

powder to crystal

color 

White to Brown

InChI

InChI=1S/C7H8O3S/c8-1-5-2-9-6-3-11-4-7(6)10-5/h3-5,8H,1-2H2

InChIKey

YFCHAINVYLQVBG-UHFFFAOYSA-N

SMILES

O1C(CO)COC2=CSC=C12

Safety Information

WGK Germany 

3

HS Code 

2934999090

HYDROXYMETHYL EDOT Usage And Synthesis

Uses

EDOT derivative useful in preparation of functional electroactive polymers

General Description

Hydroxymethyl EDOT (EDT-methanol) is a conjugated polymer that is used as a precursor of ethylenedioxythiophene (EDOT). The hydroxymethyl groups in the EDOT monomers enhance the electro-polymerization in an aqueous solution to form an electro-active hydrophilic polymer.

Synthesis

The general procedure for the synthesis of thieno[3,4-B]-1,4-dioxin-2-methanol from the compound (CAS:146796-14-7) was as follows: under nitrogen protection, 135.9 g of 2-hydroxymethyl-2,3-dihydro-thieno[3,4-b][1,4]dioxin-5,7-dicarboxylic acid, 8.3 g (0.10 mol) of copper(II) oxide and 2700.0 g of N,N-dimethylformamide were added to a 5 L four-neck detachable flask equipped with a stirrer, thermometer and condenser tube. The reaction was continuously heated and stirred at 130-132 °C for 8 hours. Upon completion of the reaction, the disappearance of the peak for 2-hydroxymethyl-2,3-dihydro-thieno[3,4-b][1,4]dioxin-5,7-dicarboxylic acid was confirmed by liquid chromatography analysis, and gas chromatography analysis showed the appearance of the main peak. The reaction solution was concentrated and cooled to below 25 ℃, dissolved in 1100 mL of toluene, filtered and washed sequentially with 1% aqueous hydrochloric acid and saturated saline, and concentrated again. The concentrate was purified by column chromatography and 76.0 g of light yellow solid was obtained after drying. The compound was analyzed by 1H-NMR, 13C-NMR and GC-MS, and the gas chromatographic determination showed that the purity of the main component of the obtained compound was 99.4%, which was confirmed to be 2-hydroxymethyl-2,3-dihydro-thieno[3,4-b][1,4]dioxin.

References

[1] Patent: JP2015/182973, 2015, A. Location in patent: Paragraph 0113; 0115; 0116
[2] Patent: JP2015/67606, 2015, A. Location in patent: Paragraph 0072
[3] Patent: CN108329329, 2018, A. Location in patent: Paragraph 0072; 0029; 0033; 0036; 0040; 0043; 0047
[4] Journal de Chimie Physique et de Physico-Chimie Biologique, 1998, vol. 95, # 6, p. 1258 - 1261
[5] Patent: WO2006/73968, 2006, A2. Location in patent: Page/Page column 23

HYDROXYMETHYL EDOT(146796-02-3)Related Product Information

• 2-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)thieno[3,2-c]pyridine
• THIENO[2,3-B]THIOPHENE-2-CARBOXYLIC ACID
• [5-(hydroxymethyl)thiophen-2-yl]methanol
• thieno[2,3-c]furan-4,6-dione
• 3,4-Thiophenedicarboxylic acid, diethyl ester
• Thiophene-2,3-dicarboxylicacid
• N'-HYDROXY-2-THIOPHENECARBOXIMIDAMIDE
• diethyl thiophene-2,5-dicarboxylate
• Thieno[3,2-b]thiophene-2,5-dicarboxaldehyde
• DTT-2,6-dicarboxylic acid