ChemicalBook CAS DataBase List 5,7-dihydroxy-8-[2-hydroxy-5-(5-hydroxy-7-methoxy-4-oxo-4H-1-benzopyran-2-yl)phenyl]-2-(4-hydroxyphenyl)-4-benzopyrone

5,7-dihydroxy-8-[2-hydroxy-5-(5-hydroxy-7-methoxy-4-oxo-4H-1-benzopyran-2-yl)phenyl]-2-(4-hydroxyphenyl)-4-benzopyrone synthesis

2synthesis methods

Product Name:5,7-dihydroxy-8-[2-hydroxy-5-(5-hydroxy-7-methoxy-4-oxo-4H-1-benzopyran-2-yl)phenyl]-2-(4-hydroxyphenyl)-4-benzopyrone
CAS Number:21763-71-3
Molecular formula:C31H20O10
Molecular Weight:552.48

2-(3-iodo-4-isopropoxyphenyl)-5,7-dimethoxy-4H-chromen-4-one

135159-02-3
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5,7-dihydroxy-8-[2-hydroxy-5-(5-hydroxy-7-methoxy-4-oxo-4H-1-benzopyran-2-yl)phenyl]-2-(4-hydroxyphenyl)-4-benzopyrone

21763-71-3
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Yield:-

Steps:

Multi-step reaction with 2 steps
1: 91 percent / K₂CO₃ / Pd(TPP)4 / dioxane; H₂O / 5 h / Heating
2: 93 percent / BCl₃ / CH₂Cl₂ / 1.) -70 deg C up to 20 deg C

References:

Muller, Dominique;Fleury, Jean-Pierre [Tetrahedron Letters,1991,vol. 32,# 20,p. 2229 - 2232]

Boronic acid, B-[5,7-bis(1-methylethoxy)-2-[4-(1-methylethoxy)phenyl]-4-oxo-4H-1-benzopyran-8-yl]-

135159-00-1
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21763-71-3
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References