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Merck
CN

235032

Bis(trimethylsilyl) malonate

98%

Synonym(s):

Malonic acid bis(trimethylsilyl ester)

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About This Item

Linear Formula:
(CH3)3SiOCOCH2COOSi(CH3)3
CAS Number:
Molecular Weight:
248.42
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
242-342-5
Beilstein/REAXYS Number:
2212115
MDL number:
Assay:
98%
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Product Name

Bis(trimethylsilyl) malonate, 98%

InChI key

ATCKJLDGNXGLAO-UHFFFAOYSA-N

InChI

1S/C9H20O4Si2/c1-14(2,3)12-8(10)7-9(11)13-15(4,5)6/h7H2,1-6H3

SMILES string

C[Si](C)(C)OC(=O)CC(=O)O[Si](C)(C)C

assay

98%

refractive index

n20/D 1.416 (lit.)

bp

63-66 °C/1 mmHg (lit.)

density

0.974 g/mL at 25 °C (lit.)

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Application

Bis(trimethylsilyl) malonate was used as cyclocondensation agent in cyclocondensation reactions. It was also used in the preparation of β-keto acids and methyl ketones.

General description

Bis(trimethylsilyl) malonate is precursor for metal-organic chemical vapor deposition (MOCVD) of HfO2 and ZrO2 thin films. It undergoes acylation reaction with acid chlorides and acyl carbonates in the presence of triethylamine and magnesium or lithium salts to give β-keto acids or methyl ketones.

pictograms

Flame

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Warning

hcodes

Hazard Classifications

Flam. Liq. 3

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

75.2 °F - closed cup

flash_point_c

24 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

危险化学品
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Malonates in cyclocondensation reactions.
Stadlbauer W, et al.
Molecules (Basel), 6(4), 338-352 (2001)
Synthesis of ?-Keto Acids and Methyl Ketones Using Bis (trimethylsilyl) Malonate and Triethylamine in the Presence of Lithium or Magnesium Halides.
Rathke MW and Nowak MA.
Synthetic Communications, 15(12), 1039-1049 (1985)
Ramasamy Pothiraja et al.
Dalton transactions (Cambridge, England : 2003), (4)(4), 654-663 (2009-04-22)
New Hf and Zr malonate complexes have been synthesized by the reaction of metal amides with different malonate ligands (L = dimethyl malonate (Hdmml), diethyl malonate (Hdeml), di-tert-butyl malonate (Hdbml) and bis(trimethylsilyl) malonate (Hbsml)). Homoleptic eight-coordinated monomeric compounds of the
Synthetic Communications, 15, 1039-1039 (1985)

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