[6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester

Base Information

• Chemical Name: [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester
• CAS No.: 219547-44-1
• Molecular Formula: C₁₈H₁₈N₂O₅S
• Molecular Weight: 374.417

Synonyms:[6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester

Chemical Property of [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester

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Technology Process of [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester

There total 3 articles about [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester 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:

1-(2-methoxyphenyl)propan-2-one (5211-62-1) → [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester (219547-44-1)

Guidance literature:

Multi-step reaction with 3 steps

1: NH₄OAc, AcOH / benzene / 24 h / Heating

2: S, Et₂NH / ethanol / 2 h / 60 °C

3: 1.) pyridine, 2.) NaOEt / 1.) 45 deg C, 3 h, 2.) EtOH, RT, 1.5 h

With pyridine; ammonium acetate; sodium ethanolate; acetic acid; diethylamine; In ethanol; benzene;

DOI:10.1248/cpb.46.1724

Reference yield:

2-amino-5-(2-methoxy-phenyl)-4-methyl-furan-3-carboxylic acid ethyl ester → [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester (219547-44-1)

Guidance literature:

Multi-step reaction with 2 steps

1: S, Et₂NH / ethanol / 2 h / 60 °C

2: 1.) pyridine, 2.) NaOEt / 1.) 45 deg C, 3 h, 2.) EtOH, RT, 1.5 h

With pyridine; sodium ethanolate; diethylamine; In ethanol;

DOI:10.1248/cpb.46.1724

Reference yield:

2-amino-5-(2-methoxy-phenyl)-4-methyl-thiophene-3-carboxylic acid ethyl ester (174072-71-0) + Glycine ethyl ester isocyanate (2949-22-6) → [6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester (219547-44-1)

Guidance literature:

With pyridine; sodium ethanolate; Yield given; Multistep reaction; 1.) 45 deg C, 3 h, 2.) EtOH, RT, 1.5 h;

DOI:10.1248/cpb.46.1724

upstream raw materials:

2-amino-5-(2-methoxy-phenyl)-4-methyl-thiophene-3-carboxylic acid ethyl ester

Glycine ethyl ester isocyanate

1-(2-methoxyphenyl)propan-2-one

Downstream raw materials:

[1-(2-methoxy-benzyl)-6-(2-methoxy-phenyl)-5-methyl-2,4-dioxo-1,4-dihydro-2H-thieno[2,3-d]pyrimidin-3-yl]-acetic acid ethyl ester

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