triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane
- CAS No.
- 159087-46-4
- Chemical Name:
- triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane
- Synonyms
- (trimethylsilyl)ethynylboronic acid pinacol ester;4,4,5,5-TetraMethyl-2-triMethylsilanylethynyl-[1,3,2]dioxaborolane;4,4,5,5-Tetramethyl-2-[(trimethylsilyl)ethynyl] 1,3,2-dioxaborolane;triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane;1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[(trimethylsilyl)ethynyl]-;4,4,5,5-tetramethyl-2-[2-(trimethylsilyl)ethynyl]-1,3,2-Dioxaborolane;1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-(trimethylsilyl)ethynyl]-;trimethyl(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane;4,4,5,5-tetramethyl-2-[2-(trimethylsilanyl) ethynyl][1,3,2]dioxaborolane;Trimethyl((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane - [T55118]
- CBNumber:
- CB72657618
- Molecular Formula:
- C11H21BO2Si
- Molecular Weight:
- 224.18
- MDL Number:
- MFCD13182130
- MOL File:
- 159087-46-4.mol
- MSDS File:
- SDS
| Boiling point | 211.1±23.0 °C(Predicted) |
|---|---|
| Density | 0.91±0.1 g/cm3(Predicted) |
| storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
| Appearance | White to off-white Solid |
| Comptox DTXSID | DTXSID00466167 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| HS Code | 2931900090 |
triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane price More Price(59)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TCI Chemical | T4381 | Trimethyl[(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)ethynyl]silane min. 97.0 % | 159087-46-4 | 1G | $138 | 2026-04-30 | Buy |
| Biosynth | JGA08746 | [(Trimethylsilyl)ethynyl]boronic acid, pinacol ester | 159087-46-4 | 5g | $687.5 | 2026-06-04 | Buy |
| Biosynth | JGA08746 | [(Trimethylsilyl)ethynyl]boronic acid, pinacol ester | 159087-46-4 | 10g | $962.5 | 2026-06-04 | Buy |
| Biosynth | JGA08746 | [(Trimethylsilyl)ethynyl]boronic acid, pinacol ester | 159087-46-4 | 25g | $1375 | 2026-06-04 | Buy |
| Apolloscientific | OR303320 | [(Trimethylsilyl)ethynyl]boronic acid, pinacol ester 95% | 159087-46-4 | 100mg | $41 | 2026-06-04 | Buy |
triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane Chemical Properties, Uses, Production
Synthesis
61676-62-8
1066-54-2
159087-46-4
GENERAL METHODS: A mixture of isopropanol pinacol borate (0.5 mmol), trimethylsilyl acetylene (0.75 mmol), PPh3 with L1 and AgCl (1 mol%), and Cs2CO3 (1.1 mmol) in DMF (5 mL) was stirred for 24 hr at 50°C in an Ar atmosphere. After completion of the reaction, the reaction mixture was acidified with 1 M hydrochloric acid solution in an ice-water bath and the aqueous phase was extracted with ethyl acetate (three times). The combined organic layers were washed with brine, dried with Na2SO4 and subsequently concentrated under reduced pressure. The crude product was purified by silica gel column chromatography to afford 4,4,5,5-tetramethyl-2-trimethylsilylalkynyl-[1,3,2]dioxaborolane.
References
[1] Tetrahedron, 2014, vol. 70, # 35, p. 5815 - 5819
[2] Tetrahedron, 2013, vol. 69, # 5, p. 1546 - 1552
[3] Patent: WO2016/97870, 2016, A1. Location in patent: Page/Page column 0174
[4] Patent: WO2013/52394, 2013, A1. Location in patent: Paragraph 00253
[5] Journal of Organic Chemistry, 2013, vol. 78, # 23, p. 11637 - 11645
triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Tetranov Biopharm | 13526569071 | sales@leadmedpharm.com | China | 7880 | 64 |
| Shanghai GAOXIANG Chemical Co., Ltd. | 021-57816257 18930243658 | fecpo@139.com | China | 295 | 55 |
| Taizhou Tongxin Bio-Tech Co., Ltd | 0523-86818997 18652728585 | sales@allyrise.com | China | 2998 | 60 |
| Bide Pharmatech Ltd. | 400-164-7117 18317119277 | product02@bidepharm.com | China | 40000 | 60 |
| Chengdu Aslee Biopharmaceuticals, Inc | 028-85305008 02885305008 | 2306208234@qq.com | China | 1006 | 50 |
| Hangzhou Milestone Pharmtech Co., Ltd. | 0571-82896630 18969958410 | sales_hz@milestonepharmtech.com | China | 4909 | 55 |
| JW & Y Pharmlab Co., Ltd. | 021-64340559 | xinyu_shi@jwypharmlab.com.cn | China | 11999 | 58 |
| Changzhou Hopschain Chemical Co.,Ltd. | 85528066 13775048983 | sales@hopschem.com | China | 31548 | 55 |
| Amadis Chemical Company Limited | 571-89925085 | sales@amadischem.com | China | 131885 | 58 |
| Aikon International Limited | 025-58859352 19370895928 | sales01@aikonchem.com | China | 15078 | 58 |
View Latest Price from triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2019-12-20 | triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane
159087-46-4
|
$1.00 | 1g | 99% | Career Henan Chemical Co |
-
- triMethyl((4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)ethynyl)silane
159087-46-4
- $1.00
- 99%
- Career Henan Chemical Co
