5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE

Modify Date: 2025-08-22 23:45:13

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure
5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE structure
Common Name 5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE
CAS Number 239075-02-6 Molecular Weight 418.18600
Density 1.17g/cm3 Boiling Point 530.458ºC at 760 mmHg
Molecular Formula C20H28B2O4S2 Melting Point 208-212ºC
MSDS Chinese USA Flash Point 274.612ºC

 Names

Name 4,4,5,5-tetramethyl-2-[5-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-2-yl]thiophen-2-yl]-1,3,2-dioxaborolane
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.17g/cm3
Boiling Point 530.458ºC at 760 mmHg
Melting Point 208-212ºC
Molecular Formula C20H28B2O4S2
Molecular Weight 418.18600
Flash Point 274.612ºC
Exact Mass 418.16200
PSA 93.40000
LogP 4.07500
Vapour Pressure 0mmHg at 25°C
Index of Refraction 1.546

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
RIDADR NONH for all modes of transport
HS Code 2934999090

 Synthetic Route

~84%

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure

5,5'-BIS(4,4,5,...

CAS#:239075-02-6

Literature: THE UNIVERSITY OF MANCHESTER; INGLESON, Michael James Patent: WO2012/25760 A1, 2012 ; Location in patent: Page/Page column 49-50 ;

~69%

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure

5,5'-BIS(4,4,5,...

CAS#:239075-02-6

Literature: Li, Yaowen; Li, Zaifang; Wang, Chunyu; Li, Hui; Lu, Hongguang; Xu, Bin; Tian, Wenjing Journal of Polymer Science, Part A: Polymer Chemistry, 2010 , vol. 48, # 13 p. 2765 - 2776

~0%

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure

5,5'-BIS(4,4,5,...

CAS#:239075-02-6

Literature: Journal of Organic Chemistry, , vol. 67, # 25 p. 8877 - 8884

~85%

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure

5,5'-BIS(4,4,5,...

CAS#:239075-02-6

Literature: Del Grosso, Alessandro; Helm, Matthew D.; Solomon, Sophia A.; Caras-Quintero, Dolores; Ingleson, Michael J. Chemical Communications, 2011 , vol. 47, # 46 p. 12459 - 12461

~%

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure

5,5'-BIS(4,4,5,...

CAS#:239075-02-6

Literature: Chemical Communications, , vol. 47, # 46 p. 12459 - 12461

~%

5,5'-BIS(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-2,2'-BITHIOPHENE Structure

5,5'-BIS(4,4,5,...

CAS#:239075-02-6

Literature: Del Grosso, Alessandro; Helm, Matthew D.; Solomon, Sophia A.; Caras-Quintero, Dolores; Ingleson, Michael J. Chemical Communications, 2011 , vol. 47, # 46 p. 12459 - 12461

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

2,2'-[2,2']-bithiophenyl-5,5'-ylbis(4,4,5,5-tetramethyl)[1,3,2]dioxaborolane
MFCD06798112
5,5'-di(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene
2,2'-Bithiophene-5,5'-diboronic Acid Bis(pinacol) Ester
2,5'-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)bithiophene
2,2'-BIS(DICYCLOHEXYLPHOSPHINO)-1,1'-BINAPHTHYL
5,5'-Bis(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bithiophene
2,2'-Bithiophene-5,5'-diboronic acid pinacol ester
2,5-bis(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)-2,2-bithiophene
2,2'-bithiophene-5,5'-diboronic acid bis(pinacolyl) ester
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