8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione

Base Information

• Chemical Name: 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione
• CAS No.: 1160228-26-1
• Molecular Formula: C₂₁H₁₈O₄
• Molecular Weight: 334.372

Synonyms:8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione

Chemical Property of 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione

Chemical Property:

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Technology Process of 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione

There total 1 articles about 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-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: 56.0%

6-acetyl-7-hydroxy-8-methyl-4-phenyl-2H-chromene-2-one (25944-40-5) + acetone (67-64-1) → 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione (1160228-26-1)

Guidance literature:

With pyrrolidine; In acetonitrile; at 45 ℃; for 8h; Kabbe cyclization;

DOI:10.1007/s00706-008-0934-0

Reference yield: 88.0%

8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione (1160228-26-1) + hydroxylamine hydrochloride (5470-11-1) → 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione 6-oxime (1160228-29-4)

Guidance literature:

With pyridine; at 120 - 150 ℃; for 1h; chemoselective reaction;

DOI:10.1007/s00706-008-0934-0

Reference yield: 85.0%

8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione (1160228-26-1) + thiosemicarbazide (79-19-6) → 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione 6-thiosemicarbazone (1160228-31-8)

Guidance literature:

With hydrogenchloride; In ethanol; water; chemoselective reaction; water bath;

DOI:10.1007/s00706-008-0934-0

upstream raw materials:

6-acetyl-7-hydroxy-8-methyl-4-phenyl-2H-chromene-2-one

acetone

Downstream raw materials:

8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione 6-oxime

8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione 6-hydrazone

8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione 6-thiosemicarbazone

8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-dione 6-(N-methylthiosemicarbazone)

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