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4-(Trimethylsilyl)phenylboronic acid

CAS No.
17865-11-1
Chemical Name:
4-(Trimethylsilyl)phenylboronic acid
Synonyms
(4-trimethylsilylphenyl)boronic acid 97%min;AKOS BRN-0431;4-(Trimethylsilyl)phenyl]boronic;4-triemthylsilylphenylboronic acid;p-Trimethylsilylbenzeneboronic acid;4-TRIMETHYLSILYLBENZENEBORONIC ACID;P-(TRIMETHYLSILYL)PHENYLBORONIC ACID;4-(trimethylsilane) phenylboric acid;4-(Trimethylsilyl)phenylboronic acid;4- (trimethyl silicon) phenylboronic acid
CBNumber:
CB1376931
Molecular Formula:
C9H15BO2Si
Molecular Weight:
194.11
MDL Number:
MFCD00093348
MOL File:
17865-11-1.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:49:13

4-(Trimethylsilyl)phenylboronic acid Properties

Melting point 173-178 °C (lit.)
Boiling point 294.4±42.0 °C(Predicted)
Density 1.01±0.1 g/cm3(Predicted)
storage temp. Keep in dark place,Sealed in dry,Room Temperature
form powder to crystal
pka 8.42±0.10(Predicted)
color White to Almost white
InChI InChI=1S/C9H15BO2Si/c1-13(2,3)9-6-4-8(5-7-9)10(11)12/h4-7,11-12H,1-3H3
InChIKey NRPZMSUGPMYBCQ-UHFFFAOYSA-N
SMILES B(C1=CC=C([Si](C)(C)C)C=C1)(O)O
CAS DataBase Reference 17865-11-1(CAS DataBase Reference)
UNSPSC Code 12352103

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319
Precautionary statements  P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
PPE Eyeshields, Gloves, type N95 (US)
Safety Statements  24/25
WGK Germany  3
HS Code  29319090
Storage Class 13 - Non Combustible Solids

4-(Trimethylsilyl)phenylboronic acid price More Price(57)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 523674 4-(Trimethylsilyl)phenylboronic acid ≥95.0% 17865-11-1 1g $45.5 2023-06-20 Buy
Sigma-Aldrich 523674 4-(Trimethylsilyl)phenylboronic acid ≥95.0% 17865-11-1 5g $190 2023-06-20 Buy
TCI Chemical T2664 4-(Trimethylsilyl)phenylboronic Acid (contains varying amounts of Anhydride) 17865-11-1 1g $48 2026-04-30 Buy
TCI Chemical T2664 4-(Trimethylsilyl)phenylboronic Acid (contains varying amounts of Anhydride) 17865-11-1 5g $169 2026-04-30 Buy
Biosynth FT40289 4-(Trimethylsilyl)pheNylboroNic acid 17865-11-1 0.25kg $900 2026-06-04 Buy
Product number Packaging Price Buy
523674 1g $45.5 Buy
523674 5g $190 Buy
T2664 1g $48 Buy
T2664 5g $169 Buy
FT40289 0.25kg $900 Buy

4-(Trimethylsilyl)phenylboronic acid Chemical Properties, Uses, Production

Chemical Properties

White solid

Synthesis

1-BROMO-4-TRIMETHYLSILYLBENZENE

6999-03-7

4-(TRIMETHYLSILYL)PHENYLBORONIC ACID

17865-11-1

General procedure for the synthesis of 4-trimethylsilylphenylboronic acid from 1-bromo-4-trimethylsilylbenzene: 1-bromo-4-(trimethylsilyl)benzene (25 g, 0.10 mol) was placed in a 1-bulb flask and operated under argon protection. After addition of tetrahydrofuran (500 mL), the reaction mixture was cooled to -78 °C and stirred for 10 min. Slowly n-butyllithium (2.5 M hexane solution, 43.6 mL, 0.10 mol) was added dropwise and stirring was continued for 1 hour and 30 minutes at a maintained temperature of -78 °C. Subsequently, trimethyl borate (13.6 mL, 0.11 mol) was added at the same temperature. The reaction mixture was stirred at -78 °C for 30 minutes and then gradually warmed up to room temperature and continued stirring for 4 hours. After completion of the reaction, extraction was carried out with distilled water and ethyl acetate. The organic layer was dried with anhydrous magnesium sulfate and the solvent was subsequently removed by rotary evaporator. Finally, the target product 4-trimethylsilylphenylboronic acid (18 g, 85% yield) was purified by column chromatography using hexane and ethyl acetate as eluents.

References

[1] Patent: WO2010/140801, 2010, A1. Location in patent: Page/Page column 18
[2] Macromolecules, 2003, vol. 36, # 7, p. 2327 - 2332
[3] Organic and Biomolecular Chemistry, 2003, vol. 1, # 9, p. 1609 - 1624

6999-03-7
17865-11-1
Synthesis of 4-(Trimethylsilyl)phenylboronic acid from 1-Bromo-4-trimethylsilylbenzene

4-(Trimethylsilyl)phenylboronic acid Preparation Products And Raw materials

Global Suppliers ( 198)
Supplier Tel Email Country ProdList Advantage
Anhui Yongsheng Pharmaceutical Technology Co., Ltd 3307 18017383231 983544897@qq.com China 942 58
Huzhou Chenghong Biotechnology Co., Ltd. 13626726938 13626726938@163.cn China 330 58
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Beijing HwrkChemical Technology Co., Ltd 89508211 18501085097 sales.bj@hwrkchemical.com China 9407 55
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Wuhan Chemwish Technology Co., Ltd 86-027-67849912 sales@chemwish.com China 35884 56
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
ZhengZhou HuaWen Chemical Co.Ltd 0370-2785118 17550508557 675141927@qq.com China 3201 55

View Latest Price from 4-(Trimethylsilyl)phenylboronic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
[4-(Trimethylsilyl)phenyl]boronic acid pictures 2026-08-25 [4-(Trimethylsilyl)phenyl]boronic acid
17865-11-1
$3.00-9.00 99% ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
4-(TRIMETHYLSILYL)PHENYLBORONIC ACID pictures 2020-01-09 4-(TRIMETHYLSILYL)PHENYLBORONIC ACID
17865-11-1
$2.00 1g 98%min Career Henan Chemical Co
4-TRIMETHYLSILYLBENZENEBORONIC ACID AKOS BRN-0431 P-(TRIMETHYLSILYL)PHENYLBORONIC ACID 4-triemthylsilylphenylboronic acid 4-(Trimethylsilyl)phenylboronic Acid (contains varying amounts of Anhydride) p-Trimethylsilylbenzeneboronic acid 4-(TriMethylsilyl)phenylboronic acid >=95.0% [[(2R,3S,4R,5R)-5-(6-amino-2-fluoro-9-purinyl)-3,4-dihydroxy-2-oxolanyl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate Boronic acid, B-[4-(trimethylsilyl)phenyl]- 4-(trimethylsilane) phenylboric acid 4-(Trimethylsilyl)phenyl]boronic 4- (trimethyl silicon) phenylboronic acid 4-Trimethylsilylphenylboronic acid - [T5630] (4-trimethylsilylphenyl)boronic acid 97%min 4-(Trimethylsilyl)phenylboronic acid 17865-11-1 C9H15BO2Si CH33SiC6H4BOH2 Organometallic Reagents Aryl Boronic Acids Boronic Acids and Derivatives Boronic acids Aryl Boronic Acids Boronic Acids and Derivatives