2H-1-Benzopyran-2-one, 3,4-dihydro-6-hydroxy-4,4,5,7,8-pentamethyl-

Base Information

• Chemical Name: 2H-1-Benzopyran-2-one, 3,4-dihydro-6-hydroxy-4,4,5,7,8-pentamethyl-
• CAS No.: 40662-76-8
• Molecular Formula: C14H18O3
• Molecular Weight: 234.295
• Mol file: 40662-76-8.mol

Synonyms:6-hydroxy-4,4,5,7,8-pentamethylchroman-2-one;6-Hydroxy-4,4,5,7,8-pentamethylhydrocumarin;6-hydroxy-4,4,5,7,8-pentamethylhydrocoumarin;6-Hydroxy-4,4,5,7,8-pentamethyl-chroman-2-one;6-Hydroxy-4,4,5,7,8-pentamethyl-chroman-2-on;

Chemical Property of 2H-1-Benzopyran-2-one, 3,4-dihydro-6-hydroxy-4,4,5,7,8-pentamethyl-

Chemical Property:

• Melting Point: 185 °C (hexane)
• Boiling Point: 366.9±42.0 °C(Predicted)
• PSA: 46.53000
• Density: 1.118±0.06 g/cm3(Predicted)
• LogP: 2.90410

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2H-1-Benzopyran-2-one, 3,4-dihydro-6-hydroxy-4,4,5,7,8-pentamethyl-

There total 8 articles about 2H-1-Benzopyran-2-one, 3,4-dihydro-6-hydroxy-4,4,5,7,8-pentamethyl- 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:

4-((((4-methoxyphenyl)carbamoyl)thio)methyl)phenyl 3-methyl-3-(2,4,5-trimethyl-3,6-dioxocyclohexa-1,4-dien-1-yl)butanoate → 6-hydroxy-4,4,5,7,8-pentamethyl-3,4-dihydrocoumarin (40662-76-8) + 4-methoxy-aniline (104-94-9)

Guidance literature:

With quinoneoxidoreductase1; NADH; carbonic anhydrase; In aq. phosphate buffer; dimethyl sulfoxide; at 37 ℃; pH=7.4; Kinetics; Inert atmosphere; Enzymatic reaction;

DOI:10.1002/asia.201901148

Reference yield:

C48H46N2O9 → 6-hydroxy-4,4,5,7,8-pentamethyl-3,4-dihydrocoumarin (40662-76-8) + rhodamine 110 chloride (13558-31-1)

Guidance literature:

With 1,4-dihydronicotinamide adenine dinucleotide; DT diaphorase;

DOI:10.1021/ol052635e

Reference yield:

(S)-4-Methyl-2-{(S)-2-[3-methyl-3-(2,4,5-trimethyl-3,6-dioxo-cyclohexa-1,4-dienyl)-butyrylamino]-3-phenyl-propionylamino}-pentanoic acid methyl ester → 6-hydroxy-4,4,5,7,8-pentamethyl-3,4-dihydrocoumarin (40662-76-8) + L-phenylalanyl-L-leucine methyl ester (38155-19-0)

Guidance literature:

With sodium dithionite; In diethyl ether; water; for 0.25h; Ambient temperature;

DOI:10.1016/S0040-4039(00)61583-6

upstream raw materials:

(S)-N-((S)-1-Methoxycarbonyl-2-phenyl-ethyl)-3-[3-methyl-3-(2,4,5-trimethyl-3,6-dioxo-cyclohexa-1,4-dienyl)-butyrylamino]-succinamic acid benzyl ester

(S)-N-((S)-1-Methoxycarbonyl-2-phenyl-ethyl)-3-{(S)-4-methylsulfanyl-2-[3-methyl-3-(2,4,5-trimethyl-3,6-dioxo-cyclohexa-1,4-dienyl)-butyrylamino]-butyrylamino}-succinamic acid benzyl ester

Downstream raw materials:

quinone-trimethyllock-C₂-diamine-Boc

3-(2,5-dihydroxy-3,4,6-trimethylphenyl)-3-methylbutanoic acid