145777

3-Methyl-2-cyclopentenone

97%

• Linear Formula: CH₃C₅H₅(=O)
• CAS Number: 2758-18-1
• Molecular Weight: 96.13
• Beilstein/REAXYS Number: 1280476
• EC Number: 220-421-5
• MDL number: MFCD00001403
• UNSPSC Code: 12352100
• PubChem Substance ID: 24848744
• NACRES: NA.22

Properties

• assay: 97%
• form: liquid
• refractive index: n20/D 1.488 (lit.)
• bp: 74 °C/15 mmHg (lit.)
• mp: 3-5 °C (lit.)
• density: 0.980 g/mL at 20 °C; 0.971 g/mL at 25 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: CC1=CC(=O)CC1
• InChI: 1S/C6H8O/c1-5-2-3-6(7)4-5/h4H,2-3H2,1H3
• InChI key: CHCCBPDEADMNCI-UHFFFAOYSA-N

Description

General description

3-Methyl-2-cyclopentenone undergoes reduction in presence of triethylammonium formate and palladium catalyst to form saturated ketone. It undergoes B(C₆F₅)₃ catalyzed hydrosilation to yield complex reaction mixtures of 1,2 addition products and oligomers.

Application

3-Methyl-2-cyclopentenone was used in the synthesis of 2-hydroxy-3-methyl-2-cyclopentenone.

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 3
• flash_point_f: 149.0 °F - closed cup
• flash_point_c: 65 °C - closed cup
• ppe: Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)