1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one

Base Information

• Chemical Name: 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one
• CAS No.: 157463-73-5
• Molecular Formula: C₂₇H₂₂OS
• Molecular Weight: 394.537

Synonyms:

Chemical Property of 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one

Chemical Property:

Purity/Quality:

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Technology Process of 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one

There total 2 articles about 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-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: 15.0%

2,2,6-trimethylthiochroman-3,4-dione (157463-58-6) + 1,3-Diphenylpropanone (102-04-5) → 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one (157463-73-5) + trans-3,3a-dihydro-1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one

Guidance literature:

With potassium hydroxide; In ethanol; for 2h; Heating;

DOI:10.1016/S0040-4020(01)85270-4

Reference yield:

2,2,6-trimethyl-2H-1-benzothiopyran-4-one (105525-72-2) → 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one (157463-73-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 79 percent / isoamyl nitrite, concd. HCl / ethanol; methanol / 0.75 h / 80 °C

2: 41 percent / potassium hydroxide / ethanol / 2 h / Heating

With hydrogenchloride; potassium hydroxide; isopentyl nitrite; In methanol; ethanol;

DOI:10.1016/S0040-4020(01)85270-4

Reference yield: 69.0%

dimethyl acetylenedicarboxylate (762-42-5) + 1,3-diphenyl-4,4,8-trimethyl-2H,4H-cyclopenta<1>benzothiopyran-2-one (157463-73-5) → dimethyl 7,10-diphenyl-2,6,6-trimethyl-6H-dibenzothiopyran-8,9-dicarboxylate

Guidance literature:

With bromobenzene; for 3h; Heating;

DOI:10.1016/S0040-4020(01)85270-4

upstream raw materials:

2,2,6-trimethylthiochroman-3,4-dione

1,3-Diphenylpropanone

2,2,6-trimethyl-2H-1-benzothiopyran-4-one

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