(Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate

Base Information

• Chemical Name: (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate
• CAS No.: 210891-61-5
• Molecular Formula: C₁₅H₁₄O₆S₂
• Molecular Weight: 354.405
• Mol file: 210891-61-5.mol

Synonyms:(Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate

Chemical Property of (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate

There total 3 articles about (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate 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: 61.0%

p-toluenesulfonyl chloride (98-59-9) + (Z)-ethyl (2,5-dihydro-3-hydroxy-5-oxo-2-thienylidene)acetate (210891-60-4) → (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate (210891-61-5)

Guidance literature:

With triethylamine; In dichloromethane; at 0 ℃; for 1.5h;

DOI:10.1016/S0223-5234(98)80064-0

Reference yield:

2-Ethoxy-4-oxo-4,5-dihydro-thiophene-3-carboxylic acid ethyl ester (210891-58-0) → (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate (210891-61-5)

Guidance literature:

Multi-step reaction with 3 steps

1: 87 percent / toluene / 1 h / Heating

2: 87 percent / conc. HCl / acetic acid / 1.25 h / Heating

3: 61 percent / Et₃N / CH₂Cl₂ / 1.5 h / 0 °C

With hydrogenchloride; triethylamine; In dichloromethane; acetic acid; toluene;

DOI:10.1016/S0223-5234(98)80064-0

Reference yield:

(Z)-ethyl (5-ethoxy-4-ethoxycarbonyl-2,3-dihydro-3-oxo-2-thienylidene)acetate (210891-59-1) → (Z)-ethyl [2,5-dihydro-3-(4-toluenesulfonyloxy)-5-oxo-2-thienylidene]acetate (210891-61-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 87 percent / conc. HCl / acetic acid / 1.25 h / Heating

2: 61 percent / Et₃N / CH₂Cl₂ / 1.5 h / 0 °C

With hydrogenchloride; triethylamine; In dichloromethane; acetic acid;

DOI:10.1016/S0223-5234(98)80064-0

upstream raw materials:

p-toluenesulfonyl chloride

(Z)-ethyl (2,5-dihydro-3-hydroxy-5-oxo-2-thienylidene)acetate

2-Ethoxy-4-oxo-4,5-dihydro-thiophene-3-carboxylic acid ethyl ester

(Z)-ethyl (5-ethoxy-4-ethoxycarbonyl-2,3-dihydro-3-oxo-2-thienylidene)acetate