Lot numbers can be found on the outside label of a product:
3,3-Dimethyldihydro-2H-pyran-2,6(3H)-dione
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CAS No. 2938-48-9
- Cat. No. CS-0153793
- Purity≥98%
- MDL No.MFCD00006682
*For research and further manufacturing use only, not for direct human use.
Structure of 2938-48-9
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General Information
- CAS No. 2938-48-9
- Cat. No. CS-0153793
- Purity ≥98%
- MDL No. MFCD00006682
- Storage Store at room temperature
- Shipping Room temperature in continental US; may vary elsewhere.
- Molecular Formula C₇H₁₀O₃
- Molecular Weight 142.15
- Synonym(s) 2,2-Dimethylglutaric anhydride
- SMILES CC1(C)CCC(=O)OC1=O
Description
3,3-Dimethyldihydro-2H-pyran-2,6(3H)-dione features a sterically hindered β-ketoester scaffold with enhanced stability under standard conditions. This bench-stable diketone integrates readily into multicomponent syntheses, serving as a key building block for complex heterocyclic systems and functionalized carbonyl architectures.
Application
3,3-Dimethyldihydro-2H-pyran-2,6(3H)-dione serves as a versatile building block in synthetic organic chemistry, enabling efficient access to substituted γ-lactones and heterocyclic scaffolds. Its stable α,β-unsaturated δ-lactone framework facilitates conjugate additions and cycloadditions under mild conditions. The molecule exhibits excellent bench stability, tolerates diverse functional groups, and simplifies purification—making it well-suited for iterative synthesis workflows in medicinal chemistry and process development.
Synthesis
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Route1
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In-stock
681-57-2 - ~71%
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In-stock
2938-48-9
References
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Pichette, Simon; Aubert-Nicol, Samuel; Lessard, Jean; Spino, Claude European Journal of Organic Chemistry, 2012 , # 7 p. 1328 - 1335
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Route2
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110054-49-4 - ~%
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In-stock
2938-48-9
References
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Bruice,T.C.; Pandit,U.K. Journal of the American Chemical Society, 1960 , vol. 82, p. 5858 - 5865
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References
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Tiemann Chemische Berichte, 1896 , vol. 29, p. 3007 Chemische Berichte, 1895 , vol. 28, p. 1083
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Safety Information
Download SDS|
GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H315-H319-H335
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Precautionary Statements : P261-P264-P271-P280-P302+P352-P304+P340-P362+P364-P405-P501
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Quality Control
Computational Chemistry Data
- TPSA 43.37
- LogP 0.8762
- H_Acceptors 3
- H_Donors 0
- Rotatable_Bonds 0
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Key Words
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