(E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

Base Information

Chemical Name:(E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one
CAS No.:1632152-57-8
Molecular Formula:C₂₂H₂₀O₄
Molecular Weight:348.398
Hs Code.:

Synonyms:(E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

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Chemical Property of (E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

Chemical Property:

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Technology Process of (E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

There total 8 articles about (E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-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:

: 1632152-52-3
(E)-5,7-dimethoxy-8-(3-methylbut-2-en-1-yl)-2-styryl-4H-chromen-4-one

: 1632152-57-8
(E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

Guidance literature:: With boron tribromide; In dichloromethane; at -78 - 20 ℃;
DOI:10.1055/s-0033-1340989

Reference yield:

: 480-66-0,67471-34-5
2,4,6-trihydroxyacetophenone

: 1632152-57-8
(E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

Guidance literature:: Multi-step reaction with 6 steps

1: potassium carbonate / tetrahydrofuran / 48 h / Inert atmosphere

2: potassium carbonate / acetone / Reflux

3: trichlorophosphate; pyridine / 80 °C

4: potassium hydroxide; dimethyl sulfoxide / 20 °C

5: dimethyl sulfoxide; toluene-4-sulfonic acid / 100 °C

6: boron tribromide / dichloromethane / -78 - 20 °C

With pyridine; boron tribromide; potassium carbonate; toluene-4-sulfonic acid; dimethyl sulfoxide; potassium hydroxide; trichlorophosphate; In tetrahydrofuran; dichloromethane; acetone;
DOI:10.1055/s-0033-1340989

Reference yield:

: 870-63-3
prenyl bromide

: 1632152-57-8
(E)-5-hydroxy-8,8-dimethyl-2-styryl-9,10-dihydropyrano[2,3-f]chromen-4(8H)-one

Guidance literature:: Multi-step reaction with 6 steps

1: potassium carbonate / acetone / 24 h / 20 °C / Reflux; Inert atmosphere

2: potassium carbonate / acetone / Reflux

3: trichlorophosphate; pyridine / 80 °C

4: potassium hydroxide; dimethyl sulfoxide / 20 °C

5: dimethyl sulfoxide; toluene-4-sulfonic acid / 100 °C

6: boron tribromide / dichloromethane / -78 - 20 °C

With pyridine; boron tribromide; potassium carbonate; toluene-4-sulfonic acid; dimethyl sulfoxide; potassium hydroxide; trichlorophosphate; In dichloromethane; acetone;
DOI:10.1055/s-0033-1340989