Synthesis
At 0 °C and under nitrogen protection, 3-cyclopentenecarboxylic acid (10 g, 89 mmol) was dissolved in dichloromethane (100 mL), followed by the addition of 1,1'-carbonyl diimidazole (43 g, 267 mmol). The reaction mixture was stirred at room temperature for 4 hours, after which methanol (100 mL) was added. Stirring of the reaction mixture was continued overnight. The solvent was removed by low temperature evaporation to afford methyl 3-cyclopentene-1-carboxylate (11.2 g, 99% yield).
References
[1] Patent: US2007/254952, 2007, A1. Location in patent: Page/Page column 35
[2] Nucleosides, Nucleotides and Nucleic Acids, 2001, vol. 20, # 4-7, p. 661 - 664
[3] ChemMedChem, 2011, vol. 6, # 9, p. 1559 - 1565
[4] Bioorganic and Medicinal Chemistry Letters, 2007, vol. 17, # 19, p. 5336 - 5339
