ABSTRACT We have developed improved general simple methods for large-scale preparation of polyalkylated imidazoles by improved multicomponent synthesis from commercially available starting materials. A large range of NH- and N-alkyl-polyalkylimidazoles (40 in total, including novel compounds) has been synthesized. GRAPHICAL ABSTRACT
Imidazole derivatives are revealed to be effective ligands in the Ru-catalyzed hydroesterification of alkenes using formates, affording one-carbon-elongated esters in high yields. Further, intramolecular hydroesterification was successfully performed to give lactones for the first time. Imidazole derivatives can contribute to promote the reaction as well as to suppress the undesired decarbonylation of formate. Toxic CO gas, a directing group, and large excess alkenes are not required.
US7777043B2
申请人:——
公开号:US7777043B2
公开(公告)日:2010-08-17
Wang, Jin; Shu, Cheng; Gao, Chao, Asian Journal of Chemistry, 2012, vol. 24, # 3, p. 1325 - 1327