5-DIAZOMELDRUM'S ACID
- Product Name
- 5-DIAZOMELDRUM'S ACID
- CAS No.
- 7270-63-5
- Chemical Name
- 5-DIAZOMELDRUM'S ACID
- Synonyms
- AURORA KA-3831;Diazomeldrumsacid;5-DIAZOMELDRUM'S ACID;5-DIAZOMELDRUM'S ACID;CYCL-ISOPROPYLIDENE DIAZOMALONATE;CYCLO-ISOPROPYLIDENE DIAZOMALONATE;CYCLIC-ISOPROPYLIDENE DIAZOMALONATE;2-Diazomalonic acid isopropylidene ester;5-DIAZO-2,2-DIMETHYL-1,3-DIOXANE-4,6-DIONE;2,2-Dimethyl-5-diazo-1,3-dioxane-4,6-dione
- CBNumber
- CB1262092
- Molecular Formula
- C6H8N2O4
- Formula Weight
- 172.14
- MOL File
- 7270-63-5.mol
5-DIAZOMELDRUM'S ACID Property
- Melting point:
- 95 °C
- storage temp.
- Keep in dark place,Inert atmosphere,2-8°C
- solubility
- sol ether, dichloromethane, and acetonitrile.
- form
- powder to crystal
- color
- White to Orange to Green
- CAS DataBase Reference
- 7270-63-5
Safety
- RIDADR
- 1325
- HS Code
- 2932.99.9090
- HazardClass
- 4.1
- PackingGroup
- III
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H228Flammable solid
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240Ground/bond container and receiving equipment.
P241Use explosion-proof electrical/ventilating/lighting/…/equipment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
N-Bromosuccinimide Price
- Product number
- D1718
- Product name
- 5-Diazo-2,2-dimethyl-1,3-dioxane-4,6-dione
- Purity
- >98.0%(HPLC)
- Packaging
- 5g
- Price
- $269
- Updated
- 2024/03/01
- Product number
- D492998
- Product name
- 5-Diazomeldrum’sAcid
- Packaging
- 500mg
- Price
- $155
- Updated
- 2021/12/16
- Product number
- D492998
- Product name
- 5-Diazomeldrum’sAcid
- Packaging
- 50mg
- Price
- $45
- Updated
- 2021/12/16
- Product number
- CHM0012658
- Product name
- 5-DIAZOMELDRUM'S ACID
- Purity
- 95.00%
- Packaging
- 5G
- Price
- $964.14
- Updated
- 2021/12/16
- Product number
- 1279AC
- Product name
- 5-Diazo-2,2-dimethyl-1,3-dioxane-4,6-dione
- Packaging
- 5g
- Price
- $412
- Updated
- 2021/12/16
5-DIAZOMELDRUM'S ACID Chemical Properties,Usage,Production
Uses
5-Diazomeldrum's acid is a reagent useful in the synthesis of α-oxyketenes and in [2 + 2] cycloaddition reactions with olefins.
Preparation
Most commonly by diazo transfer to Meldrum's acid. A number of procedures involving the use of sulfonyl azide reagents have been reported.Typical procedures involve the addition of the sulfonyl azide to a solution of Meldrum's acid containing a tertiary amine base. Aqueous workup followed by chromatography on silica gel provide the diazo compound in yields ranging from 40 to 76%. A modification using KF on alumina is reported to provide a 90% yield of 5-Diazomeldrum's acid. Diazo compounds are potentially explosive as are certain sulfonyl azides, such as tosyl azide. For this reason, extreme care must be observed in the synthesis and use of this compound, with all operations being conducted behind a blast shield in a fume hood.
storage
In addition to the previously mentioned explosion hazard which this reagent presents, there are health related hazards that must also be considered. Diazo compounds, as a class, are toxic and irritating and can be sensitizers. They must be used in a well-ventilated fume hood and not come in contact with skin. For a description of the hazards associated with this class of compounds, see the handling and storage precautions listed for Diazomethane.
5-DIAZOMELDRUM'S ACID Preparation Products And Raw materials
Raw materials
Preparation Products
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