Unusual iodine catalyzed lactonization of γ-methyl-γ,δ-pentenoic acids: A facile synthesis of γ,γ-dimethyl-γ-butyrolactones
作者:Kyoung Mahn Kim、Eung K. Ryu
DOI:10.1016/0040-4039(96)00026-3
日期:1996.2
γ,γ-Dimethyl-γ-butyrolactones were exclusively obtained from γ-methyl-γ,δ-pentenoicacids with a catalytic amount of iodine in good yields in methylene chloride.
Intermolecular free radical reactions on solid support. Allylation of esters
作者:Mukund P. Sibi、Sithamalli V. Chandramouli
DOI:10.1016/s0040-4039(97)10445-2
日期:1997.12
The first examples of intermolecular free radicalallylationreactions on solid support are reported. The allylation proceeds in good chemical efficiency with a variety of substrates as well as allylating agents. Control experiments indicate that the polymer matrix is inert to the reaction conditions.