Home > Boronic Acid Derivatives> 4,4,5,5-tetramethyl-2-[(E)-2-thiophen-3-ylethenyl]-1,3,2-dioxaborolane

4,4,5,5-tetramethyl-2-[(E)-2-thiophen-3-ylethenyl]-1,3,2-dioxaborolane

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Origin: China

Cas No: 736987-75-0

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 736987-75-0 Formula: C12H17BO2S Molecular Weight: 236.13800

Basic Info

Chemical Name	4,4,5,5-tetramethyl-2-[(E)-2-thiophen-3-ylethenyl]-1,3,2-dioxaborolane
Synonyms	trans-2-(Thiophen-3-yl)vinylboronic acid pinacol ester; 4,4,5,5-tetramethyl-2-[(E)-2-thiophen-3-ylvinyl]-1,3,2-dioxaborolane; (E)-4,4,5,5-tetramethyl-2-(2-(thiophen-3-yl)vinyl)-1,3,2-dioxaborolane; E-2-(Thiophen-3-yl)vinylboronic acid pinacol ester; 4,4,5,5-Tetramethyl-2-[(1E)-2-(3-thienyl)ethenyl]-1,3,2-dioxaborolane;
CAS No.	736987-75-0
Molecular Formula	C12H17BO2S
Molecular Weight	236.13800
PSA	46.70000
LogP	3.39270

Properties

Density	1.073 g/mL at 25ºC
Boiling Point	106-108ºC/0.2 mmHg
Refractive Index	n20/D 1.5376

Safety Info

HS Code	2934999090

Synthesis Route

3-Ethynylthiophene+Bis(pinacolato)diboron→4,4,5,5-tetramethyl-2-[(E)-2-thiophen-3-ylethenyl]-1,3,2-dioxaborolane
3-Ethynylthiophene+4,4,5,5-tetramethyl-1,3,2λ<sup>2</sup>-dioxaborolane→4,4,5,5-tetramethyl-2-[(E)-2-thiophen-3-ylethenyl]-1,3,2-dioxaborolane

Precursor

4,4,5,5-tetramethyl-1,3,2λ<sup>2</sup>-dioxaborolane
Bis(pinacolato)diboron
3-Ethynylthiophene

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