5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester

Base Information

• Chemical Name: 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester
• CAS No.: 197094-86-3
• Molecular Formula: C₁₅H₁₈O₃S
• Molecular Weight: 278.372
• Mol file: 197094-86-3.mol

Synonyms:5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester

Chemical Property of 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester

There total 4 articles about 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl 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: 71.0%

carbonic acid dimethyl ester (616-38-6) + 4-Methyl-4-(2-thiophen-3-yl-ethyl)-cyclohex-2-enone (197094-84-1) → 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester (197094-86-3)

Guidance literature:

With sodium hydride; In tetrahydrofuran; for 2h; Heating;

DOI:10.1016/S0040-4039(97)01514-1

Reference yield:

2-(3'-thiophenyl)-1-bromoethane (57070-76-5) → 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester (197094-86-3)

Guidance literature:

Multi-step reaction with 3 steps

1: 71 percent / lithium diisopropylamide / tetrahydrofuran / 20 h / Heating

2: 1.) lithium aluminum hydride; 2.) hydrochloric acid / 1.) Et₂O, 0 deg C, 30 min

3: 71 percent / sodium hydride / tetrahydrofuran / 2 h / Heating

With hydrogenchloride; lithium aluminium tetrahydride; sodium hydride; lithium diisopropyl amide; In tetrahydrofuran;

DOI:10.1016/S0040-4039(97)01514-1

Reference yield:

3-ethoxy-6-methylcyclohex-2-en-1-one (62952-33-4) → 5-Methyl-2-oxo-5-(2-thiophen-3-yl-ethyl)-cyclohex-3-enecarboxylic acid methyl ester (197094-86-3)

Guidance literature:

Multi-step reaction with 3 steps

1: 71 percent / lithium diisopropylamide / tetrahydrofuran / 20 h / Heating

2: 1.) lithium aluminum hydride; 2.) hydrochloric acid / 1.) Et₂O, 0 deg C, 30 min

3: 71 percent / sodium hydride / tetrahydrofuran / 2 h / Heating

With hydrogenchloride; lithium aluminium tetrahydride; sodium hydride; lithium diisopropyl amide; In tetrahydrofuran;

DOI:10.1016/S0040-4039(97)01514-1

upstream raw materials:

carbonic acid dimethyl ester

4-Methyl-4-(2-thiophen-3-yl-ethyl)-cyclohex-2-enone

2-(3'-thiophenyl)-1-bromoethane

3-ethoxy-6-methylcyclohex-2-en-1-one

Downstream raw materials:

3-Methyl-6-oxo-3-(2-thiophen-3-yl-ethyl)-cyclohexa-1,4-dienecarboxylic acid methyl ester

3-[2-(2-Bromo-thiophen-3-yl)-ethyl]-3-methyl-6-oxo-cyclohexa-1,4-dienecarboxylic acid methyl ester