(+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one

Base Information

• Chemical Name: (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one
• CAS No.: 450336-11-5
• Molecular Formula: C₂₂H₂₂O₅
• Molecular Weight: 366.414
• Mol file: 450336-11-5.mol

Synonyms:(+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one

Chemical Property of (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one

There total 10 articles about (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one 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: 90.0%

(2E)-1-(5-hydroxy-7-methoxy-2,2-dimethyl-2H-chromen-6-yl)-3-(4-methoxyphenyl)prop-2-en-1-one (143885-75-0) → (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one (450336-11-5)

Guidance literature:

With sodium hydroxide; adogen 464; benzylcinchonium salt; In dichloromethane; water; at 60 ℃; for 2h;

DOI:10.1002/jccs.200700119

Reference yield:

isoevodionol (25983-76-0) → (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one (450336-11-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 94 percent / KOH / ethanol; H₂O / 8 h / 20 °C

2: 90 percent / NaOH; Adogen 464 / benzylcinchonium salt / H₂O; CH₂Cl₂ / 2 h / 60 °C

With potassium hydroxide; sodium hydroxide; adogen 464; benzylcinchonium salt; In ethanol; dichloromethane; water;

DOI:10.1002/jccs.200700119

Reference yield:

2,3-dihydro-5-hydroxy-7-methoxy-2,2-dimethyl-4H-1-benzopyran-4-one (1019-60-9) → (+/-)-5-methoxy-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one (450336-11-5)

Guidance literature:

Multi-step reaction with 3 steps

1.2: 84 percent / DDQ

2.1: 94 percent / KOH / ethanol; H₂O / 8 h / 20 °C

3.1: 90 percent / NaOH; Adogen 464 / benzylcinchonium salt / H₂O; CH₂Cl₂ / 2 h / 60 °C

With potassium hydroxide; sodium hydroxide; adogen 464; benzylcinchonium salt; In ethanol; dichloromethane; water;

DOI:10.1002/jccs.200700119

upstream raw materials:

(2E)-1-(5-hydroxy-7-methoxy-2,2-dimethyl-2H-chromen-6-yl)-3-(4-methoxyphenyl)prop-2-en-1-one

isoevodionol

3,5-dihydroxyphenol

5,7-dihydroxy-2,2-dimethylchroman-4-one

Downstream raw materials:

5-[(-)-(1R,2S,5R)-2-isopropyl-5-methylcyclohexyloxy-methoxy]-2-(4-methoxyphenyl)-8,8-dimethyl-2,3-dihydro-8H-pyrano[2,3-f]chromen-4-one