3-Methylthiophene-2-boronic acid pinacol ester

Modify Date: 2025-08-25 19:49:02

3-Methylthiophene-2-boronic acid pinacol ester Structure
3-Methylthiophene-2-boronic acid pinacol ester structure
Common Name 3-Methylthiophene-2-boronic acid pinacol ester
CAS Number 885692-91-1 Molecular Weight 224.128
Density 1.1±0.1 g/cm3 Boiling Point 305.3±30.0 °C at 760 mmHg
Molecular Formula C11H17BO2S Melting Point 57-62ºC
MSDS N/A Flash Point 138.4±24.6 °C

 Names

Name 4,4,5,5-Tetramethyl-2-(3-methylthiophen-2-yl)-1,3,2-dioxaborolane
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 305.3±30.0 °C at 760 mmHg
Melting Point 57-62ºC
Molecular Formula C11H17BO2S
Molecular Weight 224.128
Flash Point 138.4±24.6 °C
Exact Mass 224.104233
PSA 46.70000
LogP 2.35570
Vapour Pressure 0.0±0.6 mmHg at 25°C
Index of Refraction 1.501

 Safety Information

HS Code 2934999090

 Synthetic Route

~54%

3-Methylthiophene-2-boronic acid pinacol ester Structure

3-Methylthiophe...

CAS#:885692-91-1

Literature: Illig, Carl R.; Ballentine, Shelley K.; Chen, Jinsheng; Meegalla, Sanath K.; Rudolph, M. Jonathan; Wall, Mark J.; Wilson, Kenneth J.; Desjarlais, Renee L.; Manthey, Carl L.; Molloy, Christopher J. Patent: US2008/51402 A1, 2008 ; Location in patent: Page/Page column 35 ; US 20080051402 A1

~52%

3-Methylthiophene-2-boronic acid pinacol ester Structure

3-Methylthiophe...

CAS#:885692-91-1

Literature: JANSSEN PHARMACEUTICA N.V. Patent: WO2007/48088 A2, 2007 ; Location in patent: Page/Page column 61-62 ; WO 2007/048088 A2

~%

3-Methylthiophene-2-boronic acid pinacol ester Structure

3-Methylthiophe...

CAS#:885692-91-1

Literature: Tetrahedron, , vol. 64, # 26 p. 6103 - 6114

 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

4,4,5,5-tetramethyl-2-(3-methylthiophen-2-yl)-1,3,2-dioxaborolane
4,4,5,5-Tetramethyl-2-(3-methyl-2-thienyl)-1,3,2-dioxaborolane
1,3,2-dioxaborolane, 4,4,5,5-tetramethyl-2-(3-methyl-2-thienyl)-
3-Methylthiophene-2-boronic acid pinacol ester
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