6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

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Chemical Name:6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid
CAS No.:220401-36-5
Molecular Formula:C₁₆H₁₄N₂O₃S
Molecular Weight:314.365
Hs Code.:

Synonyms:6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

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Chemical Property of 6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

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Technology Process of 6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

There total 1 articles about 6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid 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: 76.0%

: 189306-98-7
ethyl 6,7-dihydro-6-ethyl-3-methyl-7-oxo-4-phenylthieno[2,3-d]pyridazin-2-carboxylate

: 220401-36-5
6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

Guidance literature:: With sodium hydroxide; In ethanol; for 1.5h; Ambient temperature;
DOI:10.1016/S0223-5234(99)80030-0

Reference yield:

: 220401-36-5
6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

: 6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid amide

Guidance literature:: With ammonium hydroxide; thionyl chloride; Yield given. Multistep reaction; 1) reflux, 2 h;
DOI:10.1016/S0223-5234(99)80030-0

Reference yield:

: 220401-36-5
6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carboxylic acid

: 6-Ethyl-3-methyl-7-oxo-4-phenyl-6,7-dihydro-thieno[2,3-d]pyridazine-2-carbonitrile

Guidance literature:: Multi-step reaction with 2 steps

1: 1) SOCl₂, 2) aq. NH₃ / 1) reflux, 2 h

2: 77 percent / POCl₃ / 2 h / 120 °C

With ammonium hydroxide; thionyl chloride; trichlorophosphate;
DOI:10.1016/S0223-5234(99)80030-0