4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro-

Base Information

Chemical Name:4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro-
CAS No.:74074-04-7
Molecular Formula:C₁₆H₁₁BrO₂
Molecular Weight:315.166
Hs Code.:
DSSTox Substance ID:DTXSID70358787

Synonyms:74074-04-7;4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro-;(E)-3-(4-Bromobenzylidene)-2,3-dihydrochromen-4-one;DTXSID70358787;AKOS034382013;(E)-3-(4-Bromobenzylidene)chroman-4-one

Suppliers and Price of 4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro-

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 4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro-

Chemical Property:

PSA：26.30000
LogP:4.10780
XLogP3:4
Hydrogen Bond Donor Count:0
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:1
Exact Mass:313.99424
Heavy Atom Count:19
Complexity:369

Purity/Quality:: 99% ^*data from raw suppliers

Safty Information:

Pictogram(s):
Hazard Codes:

MSDS Files:: SDS file from LookChem

Useful:

Canonical SMILES:C1C(=CC2=CC=C(C=C2)Br)C(=O)C3=CC=CC=C3O1

Technology Process of 4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro-

There total 4 articles about 4H-1-Benzopyran-4-one, 3-[(4-bromophenyl)methylene]-2,3-dihydro- 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: 94.0%

: 491-37-2
2,3-dihydro-4H-1-benzopyran-4-one

: 1122-91-4
4-bromo-benzaldehyde

: 74074-04-7,101001-05-2
3-[(4-bromophenyl)methylene]-2,3-dihydro-4H-1-benzopyran-4-one

Guidance literature:: With sulfuric acid; In acetic acid; at 20 ℃; for 0.333333h;

Reference yield:

: 1126-20-1
2-allyloxyphenol

: 74074-04-7,101001-05-2
3-[(4-bromophenyl)methylene]-2,3-dihydro-4H-1-benzopyran-4-one

Guidance literature:: Multi-step reaction with 2 steps

1: iodine / dimethyl sulfoxide / 110 °C / Inert atmosphere

2: palladium diacetate; catacxium A; potassium phosphate; triethylamine / 1,4-dioxane / 25 h / 90 °C / Inert atmosphere; Sealed tube

With potassium phosphate; iodine; palladium diacetate; triethylamine; catacxium A; In 1,4-dioxane; dimethyl sulfoxide;
DOI:10.1002/chem.201900015

Reference yield:

: 108-73-6
3,5-dihydroxyphenol

: 74074-04-7,101001-05-2
3-[(4-bromophenyl)methylene]-2,3-dihydro-4H-1-benzopyran-4-one

Guidance literature:: Multi-step reaction with 2 steps

1.1: acetic anhydride / 1 h / 60 °C / Inert atmosphere

1.2: 4 h / Inert atmosphere

2.1: palladium diacetate; catacxium A; potassium phosphate; triethylamine / 1,4-dioxane / 25 h / 90 °C / Inert atmosphere; Sealed tube

With potassium phosphate; palladium diacetate; acetic anhydride; triethylamine; catacxium A; In 1,4-dioxane;
DOI:10.1002/chem.201900015