Fluorescent brightener 140

Base Information

• Chemical Name: Fluorescent brightener 140
• CAS No.: 61968-71-6
• Molecular Formula: C14H17NO2
• Molecular Weight: 231.29
• Mol file: 61968-71-6.mol

Synonyms:SWN;8-Amino-4-methylcoumarin;Fluorescent brightener;Fluorescent brightener 140;

Chemical Property of Fluorescent brightener 140

Chemical Property:

• Vapor Pressure: 2.43E-06mmHg at 25°C
• Boiling Point: 391.7°C at 760 mmHg
• Flash Point: 152°C
• PSA: 33.45000
• Density: 1.122g/cm³
• LogP: 2.94760

Purity/Quality:

98%Min ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of Fluorescent brightener 140

There total 36 articles about Fluorescent brightener 140 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: 95.0%

ethyl acetoacetate (141-97-9) + 3-diethylaminophenol (91-68-9) → 7-diethylamino-4-methylcoumarin (91-44-1,61968-71-6)

Guidance literature:

With acetic anhydride; ammonium chloride; zinc; at 127 - 135 ℃; Reagent/catalyst; Temperature; Inert atmosphere; Large scale;

Reference yield: 85.0%

C14H17NO2 → 7-diethylamino-4-methylcoumarin (91-44-1,61968-71-6) + C14H17NO2

Guidance literature:

With C₅₅H₉₂AuClN₂O₂₈; In water; at 37 ℃; for 42h; Reagent/catalyst; regioselective reaction; Inert atmosphere; Schlenk technique;

DOI:10.1002/chem.202001990

Reference yield: 43.0%

styrene (100-42-5,25038-60-2,25247-68-1,28213-80-1,28325-75-9,79637-11-9,9003-53-6) + 7-(diethylamino)-3-iodo-4-methyl-2H-chromen-2-one (107995-74-4) → 7-diethylamino-4-methylcoumarin (91-44-1,61968-71-6) + 7-Diethylamino-4-methyl-3-((E)-styryl)-chromen-2-one (132093-41-5)

Guidance literature:

for 10h; Further byproducts given; Irradiation;

DOI:10.1007/BF00480857

upstream raw materials:

ethyl acetoacetate

3-diethylaminophenol

furan

7-(diethylamino)-3-iodo-4-methyl-2H-chromen-2-one

Downstream raw materials:

7-diethylamino-4-methyl-3-(4-nitro-phenyl)-chromen-2-one

3-phenyl-4-methyl-7-diethylamino-2H-benzopyran-2-one

3-(4-chloro-phenyl)-7-diethylamino-4-methyl-chromen-2-one

7-(diethylamino)-3-(4-methoxyphenyl)-4-methyl-2H-chromen-2-one

Refernces

• 1、 Wu, Zhisheng,Feng, Yongliang,Geng, Bin,Liu, Junyi,Tang, Xinjing. "Fluorogenic sensing of H2S in blood and living cells via reduction of aromatic dialkylamino N-oxide". . p. 30398 - 30401. Retrieved 2014.
• 2、 Fan, Hongli,Wang, Lingqiang,Wang, Xiaolong. "Synthesis and fluorescent properties of coumarin-benzimidazole and coumarin–phenanthroimidazole hybrids". . p. 9 - 13. Retrieved 2019/11/13.