2H-Thiopyran-3,5(4H,6H)-dione

Base Information

• Chemical Name: 2H-Thiopyran-3,5(4H,6H)-dione
• CAS No.: 6881-49-8
• Molecular Formula: C5H6O2S
• Molecular Weight: 130.167
• Hs Code.: 2934999090
• Mol file: 6881-49-8.mol

Synonyms:2H-Thiopyran-3,5(4H,6H)-dione;Penthaleus majorWinter grain mite is also indexed at this heading3,5-Penthianedione;

Chemical Property of 2H-Thiopyran-3,5(4H,6H)-dione

Chemical Property:

• Vapor Pressure: 0.0141mmHg at 25°C
• Melting Point: 80-81℃ (benzene )
• Refractive Index: 1.549
• Boiling Point: 257.9 °C at 760 mmHg
• Flash Point: 120.3 °C
• PSA: 59.44000
• Density: 1.315 g/cm³
• LogP: 0.26150
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C

Purity/Quality:

97% ^*data from raw suppliers

2H-Thiopyran-3,5(4H,6H)-dione 95+% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 2H-Thiopyran-3,5(4H,6H)-dione

There total 3 articles about 2H-Thiopyran-3,5(4H,6H)-dione which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

methyl [(2-oxopropyl)sulfanyl]acetate (61363-62-0) → tetrahydrothiopyran-3,5-dione (6881-49-8)

Guidance literature:

With sodium methylate; benzene;

DOI:10.1021/ja01621a023

Reference yield:

ethyl 2-[(2-oxopropyl)sulfanyl]acetate (64878-05-3) → tetrahydrothiopyran-3,5-dione (6881-49-8)

Guidance literature:

With potassium tert-butylate; In tetrahydrofuran; at 65 ℃; for 0.25h; Inert atmosphere;

DOI:10.1021/jm400768f

Reference yield:

→ tetrahydrothiopyran-3,5-dione (6881-49-8)

Guidance literature:

Acetonylthioacetat 4a, NaH/THF;

DOI:10.1021/jo00427a014

upstream raw materials:

methyl [(2-oxopropyl)sulfanyl]acetate

ethyl 2-[(2-oxopropyl)sulfanyl]acetate

Downstream raw materials:

5-anilino-2H-thiopyran-3(6H)-one

5-ethoxy-2H-thiopyran-3(6H)-one

4-[1-(4-methoxyphenylamino)ethylidene]-2H-thiopyran-3,5(4H,6H)-dione

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