- Di-tert-Butyl malonate
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- $30.00 / 1KG
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2025-06-27
- CAS:541-16-2
- Min. Order: 50KG
- Purity: 99%
- Supply Ability: 500000kg
- Di-tert-Butyl malonate
-
- $0.00 / 1kg
-
2025-06-20
- CAS:541-16-2
- Min. Order: 1kg
- Purity: 0.99
- Supply Ability: 20 tons
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| | Di-tert-Butyl malonate Basic information |
| | Di-tert-Butyl malonate Chemical Properties |
| Melting point | -7--6 °C (lit.) | | Boiling point | 110-111 °C/22 mmHg (lit.) | | density | 0.966 g/mL at 25 °C (lit.) | | refractive index | n20/D 1.418(lit.) | | Fp | 88 °C | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | solubility | Chloroform, Ethyl Acetate | | pka | 11.87±0.46(Predicted) | | form | Liquid | | color | Clear colorless to slightly yellow | | Water Solubility | It is hardly soluble in water. | | Merck | 14,3034 | | BRN | 1781766 | | InChI | 1S/C11H20O4/c1-10(2,3)14-8(12)7-9(13)15-11(4,5)6/h7H2,1-6H3 | | InChIKey | CLPHAYNBNTVRDI-UHFFFAOYSA-N | | SMILES | CC(C)(C)OC(=O)CC(=O)OC(C)(C)C | | CAS DataBase Reference | 541-16-2(CAS DataBase Reference) | | NIST Chemistry Reference | di-tert-Butyl malonate(541-16-2) | | EPA Substance Registry System | Propanedioic acid, bis(1,1-dimethylethyl) ester (541-16-2) |
| Risk Statements | 36/37/38-24/25 | | Safety Statements | 23-24/25 | | WGK Germany | 3 | | TSCA | TSCA listed | | HS Code | 29171910 | | Storage Class | 10 - Combustible liquids |
| | Di-tert-Butyl malonate Usage And Synthesis |
| Chemical Properties | clear colorless to slightly yellow liquid | | Uses | In the preparation of ketones. | | Uses | Di-tert-butyl malonate, is used as a pharmaceutical intermediate. it can be used to produce Diazomalonsaeure-di-tert-butylester at the ambient temperature. It will need reagents cesium carbonate, p-toluenesulfonyl azide and solvent tetrahydrofuran with the reaction time of 1 hour. T | | Uses | Di-tert-butyl malonate was used in total synthesis of (+/)-actinophyllic acid. It was also employed as precursor for metal-organic chemical vapor deposition of HfO2 and ZrO2 thin films. | | Synthesis | Step 1. Malonic acid dichloride: 8.0 g (76.9 mmol) of malonic acid and 30.0 g (0.25 ) of thionyl chloride were first heated at 50C for 3 days, then at 60C for 6 hours.
mol) of thionyl chloride were heated at 50C for 3 days, then at 60C for 6 hours.
After removing the thionyl chloride in a rotary evaporator, the residue was distilled. Yield: 6.3 g (58%), oil, boiling point 43 C / 12 Torr. Step 2, Di-tert-butyl malonate: to a solution of 19.5 g (0.26 mol) of anhydrous tert-butanol in 20 mL of anhydrous N,N-dimethylaniline was added dropwise at room temperature a solution dissolved in 6.0
g (0.43 mmol) of malonic acid dichloride in a 15 mL solution of anhydrous CHCl3. Subsequently, the solution was heated at reflux for 4 hours and 40 mL of
3M sulfuric acid was added to the cooled solution. The aqueous phase was extracted three times with 50 mL of ether. The combined organic phases were washed with 20 mL of water, 20 mL of saturated aqueous potassium carbonate solution, and 20 mL of saturated sodium chloride solution.
The ether phase was dried over magnesium sulfate and filtered. The solvent was evaporated and the residue was distilled. Yield: 6.0 g (62%), bp 93 C/ 10 Torr. |
| | Di-tert-Butyl malonate Preparation Products And Raw materials |
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