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

Base Information

Chemical Name: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
CAS No.:124360-81-2
Molecular Formula:C₃₆H₃₀O₁₁S
Molecular Weight:670.694
Hs Code.:

Synonyms: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

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Chemical Property of 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

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Technology Process of 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

There total 4 articles about 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 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: 89.0%

: 98-59-9
p-toluenesulfonyl chloride

: 124360-80-1
3-(4-benzoyloxy-2,5-dimethoxyphenyl)-8,9-dihydro-5-hydroxy-8,8-dimethyl-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione

: 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

Guidance literature:: 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

: 124360-81-2
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

Guidance literature:: Multi-step reaction with 5 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

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

Reference yield:

: 124360-77-6
3-(4-benzyloxy-2,5-dimethoxyphenyl)-8,9-dihydro-5-methoxy-8,8-dimethyl-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione

: 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

Guidance literature:: Multi-step reaction with 4 steps

1: 97 percent / AlBr₃ / acetonitrile / 40 °C

2: 95 percent / H₂ / 10percent Pd/C

3: 97 percent / K₂CO₃ / acetone / Heating

4: 89 percent

With aluminum tri-bromide; hydrogen; potassium carbonate; palladium on activated charcoal; In acetone; acetonitrile;
DOI:10.1246/bcsj.62.826