3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide

Base Information

• Chemical Name: 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide
• CAS No.: 116703-62-9
• Molecular Formula: C₁₇H₁₄O₄S
• Molecular Weight: 314.362
• Mol file: 116703-62-9.mol

Synonyms:

Chemical Property of 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide

There total 3 articles about 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide 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: 31.0%

c-9b-hydroxy-c-3a-methyl-r-4-phenyl-1,3a,4,9b-tetrahydro<1,2>oxathiolo<5,4-c><1>benzopyran 2,2-dioxide (116703-61-8) → 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide (116703-62-9)

Guidance literature:

With trifluoroacetic acid; for 0.75h; Heating;

Reference yield:

2,3-trans-2,3-dihydro-3-methyl-2-phenyl-4H-1-benzopyran-4-one (15334-22-2,27025-56-5,27500-45-4) → 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide (116703-62-9)

Guidance literature:

Multi-step reaction with 3 steps

1: 51 percent / 50percent aq. NaOH, 30percent aq. H₂O₂ / ethanol / 24 h / Ambient temperature

2: 18 percent / pyridine / 216 h / Ambient temperature

3: 31 percent / CF₃COOH / 0.75 h / Heating

With sodium hydroxide; dihydrogen peroxide; trifluoroacetic acid; In pyridine; ethanol;

Reference yield:

2,3-dihydro-c-3-hydroxy-t-3-methyl-r-2-phenyl-4H-1-benzopyran-4-one (15334-21-1,116703-64-1) → 3a,4-dihydro-c-3a-methyl-r-4-phenyl<1,2>oxathiolo<4,5-c><1>benzopyran 2,2-dioxide (116703-62-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 18 percent / pyridine / 216 h / Ambient temperature

2: 31 percent / CF₃COOH / 0.75 h / Heating

With trifluoroacetic acid; In pyridine;

upstream raw materials:

c-9b-hydroxy-c-3a-methyl-r-4-phenyl-1,3a,4,9b-tetrahydro<1,2>oxathiolo<5,4-c><1>benzopyran 2,2-dioxide

2,3-trans-2,3-dihydro-3-methyl-2-phenyl-4H-1-benzopyran-4-one

2,3-dihydro-c-3-hydroxy-t-3-methyl-r-2-phenyl-4H-1-benzopyran-4-one