(R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone

Base Information

• Chemical Name: (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone
• CAS No.: 223751-33-5
• Molecular Formula: C₁₅H₁₈O₃
• Molecular Weight: 246.306
• Mol file: 223751-33-5.mol

Synonyms:(R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone

Chemical Property of (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone

There total 6 articles about (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone 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: 79.0%

(S)-3-(2,3-dimethoxy-5-methylphenyl)-3-methylcyclopentanone (1619901-33-5) → (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone (223751-33-5)

Guidance literature:

With 4,5-Diazafluoren-9-one; palladium(II) trifluoroacetate; oxygen; In dimethyl sulfoxide; at 80 ℃; for 24h; Schlenk technique; Inert atmosphere;

DOI:10.1039/c4ob01085j

Reference yield:

(S)-2-(2,3-Dimethoxy-5-methyl-phenyl)-2-methyl-4-oxo-pentanal → (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone (223751-33-5)

Guidance literature:

With potassium hydroxide; In ethanol; for 2h; Yield given; Heating;

DOI:10.1021/ja984182x

Reference yield:

(3S,7aR)-6-(2,3-Dimethoxy-5-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one → (R)-4-(2,3-dimethoxy-5-methylphenyl)-4-methylcyclopent-2-enone (223751-33-5)

Guidance literature:

Multi-step reaction with 4 steps

1: 1.) LDA / 1.) THF, hexane, -78 deg C, 1 h, 2.) THF, hexane, 2 h

2: Red-Al / tetrahydrofuran / 24 h / Ambient temperature

3: KH₂PO₄ / ethanol; H₂O / 12 h

4: 1 M KOH / ethanol / 2 h / Heating

With potassium hydroxide; potassium dihydrogenphosphate; sodium bis(2-methoxyethoxy)aluminium dihydride; lithium diisopropyl amide; In tetrahydrofuran; ethanol; water;

DOI:10.1021/ja984182x

upstream raw materials:

(3S,6S,7aR)-6-(2,3-Dimethoxy-5-methyl-phenyl)-3-isopropyl-6,7a-dimethyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

3-Methyl-2-cyclopenten-1-one

(2,3-dimethoxy-5-methylphenyl)boronic acid

(S)-3-(2,3-dimethoxy-5-methylphenyl)-3-methylcyclopentanone

Downstream raw materials:

(R)-4-(2,3-dimethoxy-5-methylphenyl)-4,5,5-trimethylcyclopent-2-enone