3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

Base Information

Chemical Name:3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one
CAS No.:124360-82-3
Molecular Formula:C₃₆H₃₂O₁₁S
Molecular Weight:672.709
Hs Code.:

Synonyms:3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

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Chemical Property of 3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

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Technology Process of 3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

There total 6 articles about 3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-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: 91.0%

: 124360-81-2
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-8,9-dihydro-8,8-dimethyl-5-tosyloxy-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione

: 124360-82-3
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

Guidance literature:: With sodium tetrahydroborate; palladium dichloride; In tetrahydrofuran; water; at 35 - 38 ℃; for 0.5h;
DOI:10.1246/bcsj.62.826

Reference yield:

: Acetic acid 6-[(E)-3-(4-benzyloxy-2,5-dimethoxy-phenyl)-acryloyl]-7-methoxy-2,2-dimethyl-4-oxo-chroman-5-yl ester

: 124360-82-3
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

Guidance literature:: Multi-step reaction with 6 steps

1: 1.) thallium(III) nitrate; 2.) 10percent HCl / 1.) MeOH, 36-38 deg C, 10 h; 2.) MeOH, reflux, 3 h

2: 97 percent / AlBr₃ / acetonitrile / 40 °C

3: 95 percent / H₂ / 10percent Pd/C

4: 97 percent / K₂CO₃ / acetone / Heating

5: 89 percent

6: 91 percent / NaBH₄ / PdCl₂ / tetrahydrofuran; H₂O / 0.5 h / 35 - 38 °C

With hydrogenchloride; sodium tetrahydroborate; aluminum tri-bromide; hydrogen; potassium carbonate; thallium(III) nitrate; palladium on activated charcoal; palladium dichloride; In tetrahydrofuran; water; acetone; acetonitrile;
DOI:10.1246/bcsj.62.826

Reference yield:

: 98-88-4
benzoyl chloride

: 124360-82-3
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-9,10-dihydro-10-hydroxy-8,8-dimethyl-5-tosyloxy-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one

Guidance literature:: Multi-step reaction with 3 steps

1: 97 percent / K₂CO₃ / acetone / Heating

2: 89 percent

3: 91 percent / NaBH₄ / PdCl₂ / tetrahydrofuran; H₂O / 0.5 h / 35 - 38 °C

With sodium tetrahydroborate; potassium carbonate; palladium dichloride; In tetrahydrofuran; water; acetone;
DOI:10.1246/bcsj.62.826