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2,5-Bis-Thiopheneboronic acid pinacol ester

2,5-Bis-Thiopheneboronic acid pinacol ester structure

CAS No.: 175361-81-6

Chemical Name:: 2,5-Bis-Thiopheneboronic acid pinacol ester

Synonyms: Thienyl-2,5-diborate;Thiophene-2,5-diboronic acids pinacol ester;2,5-Bis-Thiopheneboronic acid pinacol ester;2,5-Thiophenediboronic acid bis(pinacol) ester;Thiophene-2,5-diboronic acid bis(pinacol) ester;2,5-Bis-thiopheneboronic acid, pinacol ester 98%;Bis(4,4,5,5-tetramethyl-1,3-dioxaborolane)-2,5-thiophene;Thiophene-2,5-diboronic acid bis(pinacol) ester 99% (GC);2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene;2,2'-(2,5-Thiophenediyl)bis[4,4,5,5-tetramethyl-1,3,2-dioxaborolane

CBNumber:: CB51177120

Molecular Formula:: C16H26B2O4S

Molecular Weight:: 336.06

MDL Number:: MFCD09800563

MOL File:: 175361-81-6.mol

MSDS File:: SDS

Last updated:2026-01-13 11:17:38

Product description	Number	Pack Size	Price
Thiophene-2,5-diboronic acid bis(pinacol) ester 99% (GC)	776920	1g	$70.6
Thiophene-2,5-diboronic acid bis(pinacol) ester 99% (GC)	776920	5g	$281
2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene >98.0%(GC)(T)	B5871	1g	$72
2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene >98.0%(GC)(T)	B5871	5g	$285
2,5-Bis-thiopheneboronicacidpinacolester	B585413	1g	$75
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2,5-Bis-Thiopheneboronic acid pinacol ester Properties

Melting point	216-220℃
Boiling point	434.3±30.0 °C(Predicted)
Density	1.08±0.1 g/cm3(Predicted)
storage temp.	Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
form	powder
color	White to Almost white
InChI	InChI=1S/C16H26B2O4S/c1-13(2)14(3,4)20-17(19-13)11-9-10-12(23-11)18-21-15(5,6)16(7,8)22-18/h9-10H,1-8H3
InChIKey	AOJXAKMKFDBHHT-UHFFFAOYSA-N
SMILES	C1(B2OC(C)(C)C(C)(C)O2)SC(B2OC(C)(C)C(C)(C)O2)=CC=1
UNSPSC Code	12352103
NACRES	NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319-H335

Precautionary statements

P280-P304+P340-P305+P351+P338

WGK Germany

HS Code

2934999090

Storage Class

11 - Combustible Solids

Hazard Classifications

Aquatic Chronic 4

NFPA 704

	0
0		0

2,5-Bis-Thiopheneboronic acid pinacol ester price More Price(26)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	776920	Thiophene-2,5-diboronic acid bis(pinacol) ester 99% (GC)	175361-81-6	1g	$70.6	2023-06-20	Buy
Sigma-Aldrich	776920	Thiophene-2,5-diboronic acid bis(pinacol) ester 99% (GC)	175361-81-6	5g	$281	2023-06-20	Buy
TCI Chemical	B5871	2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene >98.0%(GC)(T)	175361-81-6	1g	$72	2025-07-31	Buy
TCI Chemical	B5871	2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene >98.0%(GC)(T)	175361-81-6	5g	$285	2025-07-31	Buy
TRC	B585413	2,5-Bis-thiopheneboronicacidpinacolester	175361-81-6	1g	$75	2021-12-16	Buy

Product number	Packaging	Price	Buy
776920	1g	$70.6	Buy
776920	5g	$281	Buy
B5871	1g	$72	Buy
B5871	5g	$285	Buy
B585413	1g	$75	Buy

2,5-Bis-Thiopheneboronic acid pinacol ester Chemical Properties,Uses,Production

Uses

Diboronic acid ester thiophene monomer for polymerization by Suzuki coupling; used for OPV and OFET applications.

Synthesis

3141-27-3

76-09-5

688-74-4

2,5-Bis-Thiopheneboronic acid pinacol ester

175361-81-6

To a solution of 2,5-dibromothiophene (2.0 g, 8.3 mmol) in anhydrous THF (40 mL) was slowly added n-butyllithium (n-BuLi, 15 mL, 1.6 M hexanes solution, 25 mmol) dropwise at -78 °C and the reaction mixture was stirred for 1 hour keeping the temperature at -78 °C. Subsequently, tributyl borate (6.4 mL, 25 mmol) was added to the reaction mixture at the same temperature and the reaction system was gradually warmed to room temperature. After continued stirring for 2 hours, pinacol (3.8 g, 33 mmol) and acetic acid (1.4 mL, 25 mmol) were added sequentially and the resulting mixture was stirred and reacted for 14 hours at room temperature. After completion of the reaction, the reaction solution was filtered through a diatomaceous earth pad and the filtrate was concentrated under reduced pressure. The residue (brown solid) was purified by recrystallization from a solvent mixture of ethyl acetate and hexane to afford the target product dipinacol ester of thiophene-2,5-diboronic acid (2.0 g, 75% yield) as a white solid.

References

[1] Chem, 2016, vol. 1, # 1, p. 91 - 101

2,5-Bis-Thiopheneboronic acid pinacol ester Preparation Products And Raw materials

Raw materials

2,5-Dibromothiophene Thiophene(SIV) (9CI) Pinacolborane Pinacol Tributyl borate

boranylbis(propan-2-yl)amine n-Butyllithium Tetrahydrofuran Hexane Acetic acid

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Preparation Products

2,5-Bis-Thiopheneboronic acid pinacol ester Suppliers

Global( 101)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Daken Advanced Materials Co.,Ltd	+86-2158073036	info@dakenam.com	China	13799	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
Wuhan Chemwish Technology Co., Ltd	027-67849912	sales@chemwish.com	CHINA	10821	58
career henan chemical co	+86-0371-86658258 +8613203830695	factory@coreychem.com	China	29795	58
Richest Group Ltd	18017061086	oled@richest-group.com	CHINA	5600	58
Zhengzhou Alfa Chemical Co.,Ltd	+8618530059196	sale04@alfachem.cn	China	11727	58
Shanghai UCHEM Inc.	+862156762820 +86-13564624040	sales@myuchem.com	China	8731	58
Alfa Chemistry	+1-5166625404;	Info@alfa-chemistry.com	United States	20405	58
Wuhan Konberd Biotech Co., Ltd	+undefined18986093962	admin@konberdbio.com	China	1378	58
Shanghai Acmec Biochemical Technology Co., Ltd.	+86-18621343501; +undefined18621343501	product@acmec-e.com	China	33325	58

Supplier	Advantage
Shanghai Daken Advanced Materials Co.,Ltd	58
Alchem Pharmtech,Inc.	58
Wuhan Chemwish Technology Co., Ltd	58
career henan chemical co	58
Richest Group Ltd	58
Zhengzhou Alfa Chemical Co.,Ltd	58
Shanghai UCHEM Inc.	58
Alfa Chemistry	58
Wuhan Konberd Biotech Co., Ltd	58
Shanghai Acmec Biochemical Technology Co., Ltd.	58

View Lastest Price from 2,5-Bis-Thiopheneboronic acid pinacol ester manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2019-12-23	2,5-Bis-Thiopheneboronic acid pinacol ester 175361-81-6	US $1.00 / g	1g	99%	1000KGS	Career Henan Chemical Co

2,5-Bis-Thiopheneboronic acid pinacol ester
175361-81-6
US $1.00 / g
99%
Career Henan Chemical Co

2,5-Bis-Thiopheneboronic acid pinacol ester Spectrum

2,5-Bis-Thiopheneboronic acid pinacol ester(175361-81-6)¹HNMR

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2,5-Bis-Thiopheneboronic acid pinacol ester Thiophene-2,5-diboronic acid bis(pinacol) ester 2,5-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene 2,5-Thiophenediboronic acid bis(pinacol) ester Bis(4,4,5,5-tetramethyl-1,3-dioxaborolane)-2,5-thiophene Thiophene-2,5-diboronic acids pinacol ester Thiophene-2,5-diboronic acid bis(pinacol) ester 99% (GC) 2,2'-(2,5-Thiophenediyl)bis[4,4,5,5-tetramethyl-1,3,2-dioxaborolane] 4,4,5,5-tetramethyl-2-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-2-yl]-1,3,2-dioxaborolane 2,5-Bis-thiopheneboronic acid, pinacol ester 98% 1,3,2-Dioxaborolane, 2,2'-(2,5-thiophenediyl)bis[4,4,5,5-tetramethyl- Thienyl-2,5-diborate 2,2'-(2,5-Thiophenediyl)bis[4,4,5,5-tetramethyl-1,3,2-dioxaborolane 175361-81-6 Thiophene (TH) Organoborons Thiophene