2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-dione

Base Information

Chemical Name:2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-dione
CAS No.:18735-96-1
Molecular Formula:C10H10O4
Molecular Weight:194.184
Hs Code.:
NSC Number:170693
Nikkaji Number:J1.278.042G

Synonyms:18735-96-1;NSC170693;NSC 170693;BRN 1311628;2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-dione;4H,5H-Pyrano(4,3-b)pyran-4,5-dione, 2,3-dihydro-2,7-dimethyl-;2,3-Diidro-2,7-dimetil-4H,5H-pirano(4,3-b)piran-4,5-dione [Italian];2,3-Diidro-2,7-dimetil-4H,5H-pirano(4,3-b)piran-4,5-dione;2,7-Dimethyl-2,3-dihydro-4H,5H-pyrano[4,3-b]pyran-4,5-dione;NSC-170693;2,7-dimethyl-2,3-dihydropyrano[4,3-b]pyran-4,5-dione

Suppliers and Price of 2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-dione

Supply Marketing:

Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

Manufacturers and distributors:

Manufacture/Brand
Chemicals and raw materials
Packaging
price

Total 3 raw suppliers

Chemical Property of 2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-dione

Chemical Property:

Vapor Pressure:0.000158mmHg at 25°C
Boiling Point:331.2°C at 760 mmHg
Flash Point:148.2°C
Density:1.29g/cm³
XLogP3:1
Hydrogen Bond Donor Count:0
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:0
Exact Mass:194.05790880
Heavy Atom Count:14
Complexity:376

Purity/Quality:: 85.0-99.8% ^*data from raw suppliers

Safty Information:

Pictogram(s):
Hazard Codes:

MSDS Files:: SDS file from LookChem

Useful:

Canonical SMILES:CC1CC(=O)C2=C(O1)C=C(OC2=O)C

Technology Process of 2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-dione

There total 5 articles about 2,7-Dimethyl-2,3,4,5-tetrahydropyrano(4,3-b)pyran-4,5-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: 57.0%

: 675-10-5
4-hydroxy-6-methyl-2-pyron

: 107-93-7
(E)-but-2-enoic acid

: 18735-96-1
2,3-Dihydro-2,7-dimethyl-4H,5H-pyrano-<4,3-b>-pyran-4,5-dion

Guidance literature:: With zinc(II) chloride; trichlorophosphate; at 80 - 90 ℃; for 4h;
DOI:10.1016/S0040-4039(00)00057-5

Reference yield: 45.0%

: 675-10-5
4-hydroxy-6-methyl-2-pyron

: 10487-71-5
crotonyl chloride

: 18735-96-1
2,3-Dihydro-2,7-dimethyl-4H,5H-pyrano-<4,3-b>-pyran-4,5-dion

Guidance literature:: With titanium tetrachloride; In 1,1,2,2-tetrachloroethane; at 20 - 100 ℃; for 3.25h; Inert atmosphere;
DOI:10.3390/molecules24173193

Reference yield:

: 136801-79-1
6-(2-hydroxypropyl)-2,2-dimethyl-4H-1,3-dioxin-4-one

: 18735-96-1
2,3-Dihydro-2,7-dimethyl-4H,5H-pyrano-<4,3-b>-pyran-4,5-dion

Guidance literature:: Multi-step reaction with 3 steps

1: Dess-Martin periodane / dichloromethane / 1.5 h / 20 °C

2: toluene / 0.5 h / 100 °C

3: titanium tetrachloride / 1,1,2,2-tetrachloroethane / 3.25 h / 20 - 100 °C / Inert atmosphere

With titanium tetrachloride; Dess-Martin periodane; In dichloromethane; toluene; 1,1,2,2-tetrachloroethane; 3: |Michael Addition;
DOI:10.3390/molecules24173193