3-Methylene-2H-1-benzopyran-2,4(3H)-dione

Base Information

• Chemical Name: 3-Methylene-2H-1-benzopyran-2,4(3H)-dione
• CAS No.: 118157-98-5
• Molecular Formula: C₁₀H₆O₃
• Molecular Weight: 174.156
• DSSTox Substance ID: DTXSID601270436
• Nikkaji Number: J618.530D

Synonyms:3-Methylene-2H-1-benzopyran-2,4(3H)-dione;118157-98-5;3-methylene-2,4-dioxochromene;SCHEMBL13397579;DTXSID601270436

Chemical Property of 3-Methylene-2H-1-benzopyran-2,4(3H)-dione

Chemical Property:

• XLogP3: 2
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 0
• Exact Mass: 174.031694049
• Heavy Atom Count: 13
• Complexity: 280

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

• Canonical SMILES: C=C1C(=O)C2=CC=CC=C2OC1=O

Technology Process of 3-Methylene-2H-1-benzopyran-2,4(3H)-dione

There total 1 articles about 3-Methylene-2H-1-benzopyran-2,4(3H)-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:

3-[(benzylamino)methyl]-4-hydroxy-2H-chromen-2-one → 4-hydroxy-3-hydroxymethylcoumarin + dicoumarol (66-76-2) + 3-methylidene-2H-chromene-2,4(3H)-dione (118157-98-5) + benzylamine (100-46-9)

Guidance literature:

In dimethylsulfoxide-d6; at 20 ℃;

DOI:10.1007/s11172-015-0879-5

Reference yield:

3-methylidene-2H-chromene-2,4(3H)-dione (118157-98-5) → dicoumarol (66-76-2)

Guidance literature:

With benzylammonium N-benzyldithiocarbamate; In water; at 20 ℃; Reagent/catalyst;

DOI:10.1007/s13738-019-01644-z

Reference yield:

3-methylidene-2H-chromene-2,4(3H)-dione (118157-98-5) → 1-<2-Hydroxy-phenyl>-2-methyl-pentan-dion-(1,4) (19725-73-6)

Guidance literature:

Multi-step reaction with 2 steps

2: aq. NaOH

With sodium hydroxide;

DOI:10.1039/c39880000527

Downstream raw materials:

1-<2-Hydroxy-phenyl>-2-methyl-pentan-dion-(1,4)

dicoumarol

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