Dimethylketene methyl trimethylsilyl acetal
- CAS No.
- 31469-15-5
- Chemical Name:
- Dimethylketene methyl trimethylsilyl acetal
- Synonyms
- ((1-Methoxy-2-Methylprop-1-en-1-yl)oxy)triMethylsilane;MTDA;1-METHOXY-2-METHYL-1-(TRIMETHYLSILOXY)PROPENE;1-METHOXY-1-(TRIMETHYLSILOXY)-2-METHYL-1-PROPENE;(1-Methoxy-2-Methylprop-1-enyloxy)triMethylsilane;DKSI044;DKFELEX0086;1-Methoxy-1-tri;organosilicon monomer;DIMETHYLKETENE METHYL
- CBNumber:
- CB7339664
- Molecular Formula:
- C8H18O2Si
- Molecular Weight:
- 174.31
- MDL Number:
- MFCD00010232
- MOL File:
- 31469-15-5.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Boiling point | 35 °C15 mm Hg(lit.) |
|---|---|
| Density | 0.858 g/mL at 25 °C(lit.) |
| refractive index |
n |
| Flash point | 58 °F |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | freely sol organic solvents. |
| form | clear liquid |
| color | Colorless to Almost colorless |
| Specific Gravity | 0.858 |
| Water Solubility | Hydrolyzes in water. |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 8: reacts rapidly with moisture, water, protic solvents |
| BRN | 1362893 |
| Stability | Moisture and Acid Sensitive |
| InChI | 1S/C8H18O2Si/c1-7(2)8(9-3)10-11(4,5)6/h1-6H3 |
| InChIKey | JNOGVQJEBGEKMG-UHFFFAOYSA-N |
| SMILES | CO\C(O[Si](C)(C)C)=C(/C)C |
| CAS DataBase Reference | 31469-15-5(CAS DataBase Reference) |
| EPA Substance Registry System | Silane, [(1-methoxy-2-methyl-1-propenyl)oxy]trimethyl- (31469-15-5) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H226-H315-H319-H335 | |||||||||
| Precautionary statements | P210-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 10-36/37/38 | |||||||||
| Safety Statements | 16-26-36 | |||||||||
| RIDADR | UN 3271 3/PG 3 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 10-21 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29319090 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Flam. Liq. 3 Skin Irrit. 2 STOT SE 3 |
|||||||||
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
Dimethylketene methyl trimethylsilyl acetal price More Price(44)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 274585 | Methyl trimethylsilyl dimethylketene acetal 95% | 31469-15-5 | 5g | $112 | 2026-04-30 | Buy |
| Sigma-Aldrich | 274585 | Methyl trimethylsilyl dimethylketene acetal 95% | 31469-15-5 | 25g | $309 | 2026-04-30 | Buy |
| TCI Chemical | D1789 | Dimethylketene Methyl Trimethylsilyl Acetal >95.0%(GC) | 31469-15-5 | 5mL | $55 | 2026-04-30 | Buy |
| TCI Chemical | D1789 | Dimethylketene Methyl Trimethylsilyl Acetal >95.0%(GC) | 31469-15-5 | 25mL | $161 | 2026-04-30 | Buy |
| TRC | TRC-M264885-5G | (1-Methoxy-2-methylprop-1-enoxy)trimethylsilane | 31469-15-5 | 5g | $147 | 2026-06-03 | Buy |
Dimethylketene methyl trimethylsilyl acetal Chemical Properties, Uses, Production
Chemical Properties
Clear colorless liquid
Physical properties
bp 35 °C/15 mmHg; d 0.858 g cm3.
Uses
1-Methoxy-2-methyl-1-(trimethylsilyloxy) propene is widely used as functional equivalent of enolate of methyl isobutyrate; ester enolate surrogate in electrophilic reactions including alkylation, aldol reaction, Michael reaction, initiator for group transfer polymerization of acrylates, nitroarylation, oxidation, dimerization, and cycloadditions.
Uses
1-Methoxy-2-methyl-1-(trimethylsiloxy)propene is used in the synthesis of chiral β-lactams by reacting with (S)-alkylidene(1-arylethyl)amines in the presence of titanium tetrachloride. It acts as a catalyst or initiator in the group-transfer polymerization. It is also used as a versatile reagent in conjugate addition4 and aldol reactions.
Preparation
The title compound is a prototypical ketene silyl acetal (KSA) that can been prepared by either of the two most commonly employed methods: (a) deprotonation of the |á-hydrogen of an ester followed by silylation (1),16 and (b) metal-catalyzed hydrosilylation of |á,|-unsaturated esters(2).
Purification Methods
Add Et2O, wash with cold H2O, dry (Na2SO4), filter, evaporate Et2O, and distil the oily residue in a vacuum. [Ainsworth et al. J Organometal Chem 46 59 1972.]
Dimethylketene methyl trimethylsilyl acetal Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Nanjing Habo Medical Technology Co., Ltd. | 13376080562 13376090521 | sales@habotech.com | China | 724 | 60 |
| Shanghai Qiming New Material Co. LTD | 021-36010885 13661599081;13701898138 | sale@qmsilicon.com | China | 1474 | 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 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Jia Xing Isenchem Co.,Ltd | 0573-85285100 18627885956 | isenchem@163.com | China | 9389 | 66 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| China DongFan Chemical Co.,LTD | 86-0571-85151182 | China | 5681 | 66 |
View Latest Price from Dimethylketene methyl trimethylsilyl acetal manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-25 | 1-Methoxy-1-(Trimethylsiloxy)-2-Methyl-1-Propene
31469-15-5
|
$1.10-9.90 | 1kg | 99%min | 100kg | ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD | |
 |
2026-06-30 | DIMETHYLKETENE METHYL TRIMETHYLSILYL ACETAL
31469-15-5
|
1KG | 97.0% | 10000KGS | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2024-07-21 | DIMETHYLKETENE METHYL TRIMETHYLSILYL ACETAL
31469-15-5
|
$1.00 | 1Kg | 98% | 20T | Shaanxi Dideu Medichem Co. Ltd |
-
- 1-Methoxy-1-(Trimethylsiloxy)-2-Methyl-1-Propene
31469-15-5
- $1.10-9.90
- 99%min
- ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
-
- DIMETHYLKETENE METHYL TRIMETHYLSILYL ACETAL
31469-15-5
- 97.0%
- Shaanxi Dideu New Materials Co. Ltd
-
- DIMETHYLKETENE METHYL TRIMETHYLSILYL ACETAL
31469-15-5
- $1.00
- 98%
- Shaanxi Dideu Medichem Co. Ltd
