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Sigma-Aldrich

2,2,6,6-Tetramethyl-3,5-heptanedione

98%

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Synonym(s):
Dipivaloylmethane
Linear Formula:
(CH3)3CCOCH2COC(CH3)3
CAS Number:
1118-71-4
Molecular Weight:
184.28
Beilstein:
1447269
EC Number:
214-268-3
MDL number:
MFCD00008848
UNSPSC Code:
12352100
PubChem Substance ID:
24849563
NACRES:
NA.22

Quality Level

200

Assay

98%

form

liquid

refractive index

n20/D 1.459 (lit.)

bp

72-73 °C/6 mmHg (lit.)

density

0.883 g/mL at 25 °C (lit.)

SMILES string

CC(C)(C)C(=O)CC(=O)C(C)(C)C

InChI

1S/C11H20O2/c1-10(2,3)8(12)7-9(13)11(4,5)6/h7H2,1-6H3

InChI key

YRAJNWYBUCUFBD-UHFFFAOYSA-N

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General description

2,2,6,6-Tetramethyl-3,5-heptanedione is a bidentate ligand used in the synthesis of stable complexes with lanthanide ions.

2,2,6,6-Tetramethyl-3,5-heptanedioneis a stable, anhydrous reagent. It undergoes O-additions and C-additions. In various reactions, it acts as an air-stable ligand for metal catalysts. Furthermore, it serves as a substrate for heterocycles.

Application

2,2,6,6-tetramethyl-3,5-heptanedione was used in the synthesis of α-aryl-β-diketones and dicyanamidobenzene-bridge diruthenium complex.

2,2,6,6-Tetramethyl-3,5-heptanedione used as a ancillary ligand in the synthesis of orange-emitting iridium(III) complex.

WGK

WGK 1

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Thermochemistry of 2, 2, 6, 6-tetramethyl-3, 5-heptanedione chelates of lanthanide group elements
Santos Jr, et al.
Polyhedron, 18, 969-977 (1999)
Synthesis and characterization of phenylpyridine derivative containing an imide functional group on an iridium (III) complex for solution-processable orange-phosphorescent organic light-emitting diodes
Hwang J, et al.
Dyes and Pigments, 121, 73-78 (2015)
Tetrahedron, 48, 6909-6909 (1992)
2, 2, 6, 6-Tetramethyl-3, 5-heptanedione
Jurica EA
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Muriel Fabre et al.
Inorganic chemistry, 45(23), 9332-9345 (2006-11-07)
The dicyanamidobenzene-bridge diruthenium complex [{Ru(tpy)(thd)}(2)(mu-dicyd)][PF(6)] ([3][PF(6)]) (dicyd = 1,4-dicyanamidobenzene, tpy = 2,2':6',2' '-terpyridine, thd = 2,2,6,6-tetramethyl-3,5-heptanedione) and its mononuclear counterpart [Ru(tpy)(thd)(Ipcyd)] (2) [Ipcyd = 4-iodophenylcyanamide anion (Ipcyd(-))] were synthesized and fully characterized. Cyclic voltammetry of 3 showed the presence of
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