5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone

Base Information

Chemical Name:5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone
CAS No.:80902-86-9
Molecular Formula:C₃₉H₄₂O₇
Molecular Weight:622.758
Hs Code.:

Synonyms:

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Chemical Property of 5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone

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Technology Process of 5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone

There total 9 articles about 5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone 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:

: 80902-78-9
methyl 5-hydroxy-2,4-dimethoxybenzoate

: 80902-86-9
5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone

Guidance literature:: Multi-step reaction with 5 steps

1: 2.95 g / potassium carbonate, potassium iodide / acetone; H₂O / 72 h / Heating

2: 1.8 g / N,N-diethylaniline / 7.5 h / Heating

3: 1.28 g / hydrogen / palladium-carbon / ethanol

4: sodium hydroxide / methanol / 2 h

5: 1.31 g / trifluoroacetic anhydride / CH₂Cl₂ / 0.17 h / 30 °C

With sodium hydroxide; hydrogen; potassium carbonate; N,N-diethylaniline; trifluoroacetic anhydride; potassium iodide; palladium on activated charcoal; In methanol; ethanol; dichloromethane; water; acetone;
DOI:10.1039/P19810003205

Reference yield:

: 80902-80-3
methyl 6,8-dimethoxy-2,2-dimethyl-2H-1-benzopyran-5-carboxylate

: 80902-86-9
5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone

Guidance literature:: Multi-step reaction with 3 steps

1: 1.28 g / hydrogen / palladium-carbon / ethanol

2: sodium hydroxide / methanol / 2 h

3: 1.31 g / trifluoroacetic anhydride / CH₂Cl₂ / 0.17 h / 30 °C

With sodium hydroxide; hydrogen; trifluoroacetic anhydride; palladium on activated charcoal; In methanol; ethanol; dichloromethane;
DOI:10.1039/P19810003205

Reference yield:

: 80902-77-8
methyl 2,4-dimethoxy-5-methoxycarbonyloxybenzoate

: 80902-86-9
5,7-bisbenzyloxy-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-8-yl 3,4-dihydro-6,8-dimethoxy-2H-1-benzopyran-5-yl ketone

Guidance literature:: Multi-step reaction with 6 steps

1: 5.65 g / aq. sodium hydroxide / tetrahydrofuran / 1) 0-5 deg C, 0.5 h; 2) room temperature

2: 2.95 g / potassium carbonate, potassium iodide / acetone; H₂O / 72 h / Heating

3: 1.8 g / N,N-diethylaniline / 7.5 h / Heating

4: 1.28 g / hydrogen / palladium-carbon / ethanol

5: sodium hydroxide / methanol / 2 h

6: 1.31 g / trifluoroacetic anhydride / CH₂Cl₂ / 0.17 h / 30 °C

With sodium hydroxide; hydrogen; potassium carbonate; N,N-diethylaniline; trifluoroacetic anhydride; potassium iodide; palladium on activated charcoal; In tetrahydrofuran; methanol; ethanol; dichloromethane; water; acetone;
DOI:10.1039/P19810003205