ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate

Base Information

• Chemical Name: ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate
• CAS No.: 127018-61-5
• Molecular Formula: C₂₀H₂₁NO₅S
• Molecular Weight: 387.456

Synonyms:ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate

Chemical Property of ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate

Chemical Property:

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Technology Process of ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate

There total 3 articles about ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate 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: 83.0%

3-Oxo-3,4-dihydro-2H-1,4-benzothiazin-2-carbonsaeure-ethylester (28731-96-6) + 4-chloromethyl-1,2-dimethoxy-benzene (7306-46-9) → ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate (127018-61-5)

Guidance literature:

With potassium carbonate; sodium iodide; In butanone; for 2h; Heating;

DOI:10.1248/cpb.38.1238

Reference yield:

Diethyl 2-bromomalonate (685-87-0) → ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate (127018-61-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 89 percent / dimethylformamide / 2 h / 80 °C

2: 83 percent / K₂CO₃ / NaI / butan-2-one / 2 h / Heating

With potassium carbonate; sodium iodide; In N,N-dimethyl-formamide; butanone;

DOI:10.1248/cpb.38.1238

Reference yield:

2-amino-benzenethiol (137-07-5) → ethyl 2-(3,4-dimethoxybenzyl)-3,4-dihydro-3-oxo-2H-1,4-benzothiazine-2-carboxylate (127018-61-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 89 percent / dimethylformamide / 2 h / 80 °C

2: 83 percent / K₂CO₃ / NaI / butan-2-one / 2 h / Heating

With potassium carbonate; sodium iodide; In N,N-dimethyl-formamide; butanone;

DOI:10.1248/cpb.38.1238

upstream raw materials:

3-Oxo-3,4-dihydro-2H-1,4-benzothiazin-2-carbonsaeure-ethylester

4-chloromethyl-1,2-dimethoxy-benzene

Diethyl 2-bromomalonate

2-amino-benzenethiol

Downstream raw materials:

[2-(3,4-Dimethoxy-benzyl)-3-oxo-2,3-dihydro-benzo[1,4]thiazin-4-yl]-acetic acid

2-(3,4-dimethoxybenzyl)-2H-1,4-benzothiazin-3(4H)-one

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