5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione

Base Information

• Chemical Name: 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione
• CAS No.: 1137167-13-5
• Molecular Formula: C₁₇H₁₀F₄N₂O₃
• Molecular Weight: 366.272

Synonyms:5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione

Chemical Property of 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione

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Technology Process of 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione

There total 3 articles about 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-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: 94.0%

phenylhydrazine (100-63-0) + 3-acetyl-5,6,7,8-tetrafluoro-4-hydroxy-2H-chromen-2-one (209736-57-2) → 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione (1137167-13-5)

Guidance literature:

In diethyl ether; at 20 ℃; for 24h;

DOI:10.1007/s11172-009-0166-4

Reference yield: 93.0%

3-[1-aminoethylidene]-5,6,7,8-tetrafluorobenzopyran-2,4-dione (1137167-11-3) + phenylhydrazine (100-63-0) → 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione (1137167-13-5)

Guidance literature:

In diethyl ether; at 25 ℃; for 24h;

DOI:10.3987/COM-08-11495

Reference yield: 93.0%

phenylhydrazine (100-63-0) + 3-acetimidoyl-5,6,7,8-tetrafluoro-4-hydroxy-2H-chromen-2-one (209736-53-8) → 5,6,7,8-tetrafluoro-3-[1-(2-phenylhydrazino)ethylidene]benzopyran-2,4-dione (1137167-13-5)

Guidance literature:

In diethyl ether; at 20 ℃; for 24h;

DOI:10.1007/s11172-009-0166-4

upstream raw materials:

3-[1-aminoethylidene]-5,6,7,8-tetrafluorobenzopyran-2,4-dione

phenylhydrazine

3-acetimidoyl-5,6,7,8-tetrafluoro-4-hydroxy-2H-chromen-2-one

3-acetyl-5,6,7,8-tetrafluoro-4-hydroxy-2H-chromen-2-one

Downstream raw materials:

6,7,8-trifluoro-5-hydroxy-3-methyl-1-phenylbenzopyrano[2,3-c]pyrazol-4(1H)-one

6,7,8-trifluoro-5-hydroxy-1,3-dimethylbenzopyrano[2,3-c]pyrazol-4(1H)-one

4-(2,3,4,5-tetrafluoro-6-hydroxybenzoyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

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