title: Practical methylenation reaction for aldehydes and ketones using new Julia-type reagents.
abstract: A new Julia-type methylenation reagent, 1-methyl-2-(methylsulfonyl)benzimidazole (1e), reacts with a variety of aldehydes and ketones in the presence of either NaHMDS (-55 °C to rt) or t-BuOK (rt, 1 h) in DMF to give the corresponding terminal alkenes in high yields. The byproducts are easily removed, and the reaction conditions are mild and practical.
authors.affiliation: Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.
authors.forename: Kaori
authors.initials: K
authors.lastname: Ando
authors.affiliation: Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.
authors.forename: Takahisa
authors.initials: T
authors.lastname: Kobayashi
authors.affiliation: Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan.
authors.forename: Nariaki
authors.initials: N
authors.lastname: Uchida