CasNo: 57280-22-5
Molecular Formula: C7H12O3
Chemical Properties |
Clear colorless to yellow liquid |
Uses |
4,4-Dimethyl-3,5,8-trioxabicyclo[5.1.0]octane plays an important role in the fields of medicine and chemical industry. In particular, as an intermediate of gadobutrol, i.e., the epoxy side chain of gadobutrol, it provides a key compound basis for magnetic resonance imaging technology in medical diagnosis. In addition, due to its unique molecular structure and properties, 4,4-Dimethyl-3,5,8-trioxabicyclo[5.1.0]octane may also be used as an intermediate for the synthesis of other complex organic compounds. |
Enantioselective synthesis of the hexahy...
Two stereocomplexed CO2 -based polycarbonates from meso-3,4-epoxytetrahydrofuran and 4,4-dimethyl-3,5,8-trioxabicyclo[5.1.0]octane have high melting temperatures of up to 300 °C, about 30 °C higher than the individual enantiomers. Isotactic (R)- or (S)-poly(cyclopentene carbonate) and poly(cis-2,3-butene carbonate) are typical amorphous polymeric materials, however, upon mixing both enantiomers together, a strong interlocked interaction between polymer chains of opposite configuration occurs, affording the crystalline stereocomplexes with melting temperatures of about 200 °C and 180 °C, respectively.
The synthesis of novel oxygen-bearing ligands has been achieved by the mono- and di-alkylation of a range of polyamines with 4,4-dimethyl-3,5,8-trioxabicyclo[5.1.0]octane (1). Subsequent deprotection of the acetal resulted in the formation of hydroxyl-bearing ligands.
2,2-dimethyl-4,7-dihydro-1,3-dioxepin
4,4-dimethyl-3,5,8-trioxabicyclo[5.1.0]-octane
Conditions | Yield |
---|---|
With disodium hydrogenphosphate; dihydrogen peroxide; sodium hydroxide; In methanol; water; acetonitrile; at 60 - 80 ℃; pH=7 - 9.5; Large scale; Green chemistry;
|
85.2% |
With disodium hydrogenphosphate; 3-chloro-benzenecarboperoxoic acid; In dichloromethane; at 20 ℃; for 18h; Inert atmosphere;
|
85% |
With disodium hydrogenphosphate; dihydrogen peroxide; Hexafluoroacetone; In 1,2-dichloro-ethane; for 24h; Heating;
|
83% |
With 3-chloro-benzenecarboperoxoic acid; In dichloromethane;
|
80% |
With sodium hydroxide; tert-butylhypochlorite; sodium hydrogensulfite; In aqueous t-butanol;
|
80% |
With dihydrogen peroxide; sodium carbonate; In methanol; benzonitrile;
|
70% |
With dihydrogen peroxide; sodium carbonate; In methanol; acetonitrile;
|
67% |
With disodium hydrogenphosphate; phosphomolybdic acid; dihydrogen peroxide; sodium hydroxide; In methanol; water; at 40 - 60 ℃; for 3h; pH=8 - 10; Reagent/catalyst;
|
|
Multi-step reaction with 2 steps
1: N-Bromosuccinimide; water / tetrahydrofuran / 2 h / 20 °C
2: potassium carbonate / methanol / 16 h / 20 °C
With N-Bromosuccinimide; water; potassium carbonate; In tetrahydrofuran; methanol;
|
C7H13BrO3
4,4-dimethyl-3,5,8-trioxabicyclo[5.1.0]-octane
Conditions | Yield |
---|---|
With potassium carbonate; In methanol; at 20 ℃; for 16h;
|
19 g |
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