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210153

Sigma-Aldrich

2,2,5-Trimethyl-1,3-dioxane-4,6-dione

97%

Synonym(s):

cycl-Isopropylidene methylmalonate, Methyl Meldrum’s acid, Methylmalonic acid cyclic isopropylidene ester

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About This Item

Empirical Formula (Hill Notation):
C7H10O4
CAS Number:
3709-18-0
Molecular Weight:
158.15
Beilstein/REAXYS Number:
124044
EC Number:
223-050-7
MDL number:
MFCD00006637
UNSPSC Code:
12352100
PubChem Substance ID:
24852619
NACRES:
NA.22

assay

97%

form

solid

mp

111-114 °C (lit.)

SMILES string

CC1C(=O)OC(C)(C)OC1=O

InChI

1S/C7H10O4/c1-4-5(8)10-7(2,3)11-6(4)9/h4H,1-3H3

InChI key

KJMCAXYHYPDRAV-UHFFFAOYSA-N

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General description

X-ray irradiated single crystals of 2,2,5-trimethyl-1,3-dioxane-4,6-dione have been investigated by electron spin resonance (ESR), electron nuclear double resonance (ENDOR) and electron-electron double resonance (ELDOR) spectra.

application

2,2,5-Trimethyl-1,3-dioxane-4,6-dione was used for trapping the adduct formed during the reaction between alkyl isocyanides and dialkyl acetylenedicarboxylates.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

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An ESR, ENDOR, and ELDOR study of tunneling rotation of a hindered methyl group in x-irradiated 2, 2, 5-trimethyl-1, 3-dioxane-4, 6-dione crystals.
Geoffroy M, et al.
J. Chem. Phys. , 70(9), 4238-4242 (2008)
Issa Yavari et al.
Molecular diversity, 10(2), 247-250 (2006-06-14)
The adduct produced in the reaction between alkyl isocyanides and dialkyl acetylenedicarboxylates was trapped by 2,2,5-trimethyl-1,3-dioxane-4,6-dione (methyl Meldrum's acid), to afford highly functionalized ketenimines in good yields.

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