oxy-1-butene and 4-chloro-1-ethynyl-1,5-dimethyl-5-hexenyl acetate, respectively. In contrast, 3-methyl-2-butenyl derivatives 2d–f and 3-methyl-2-butenoic acid afforded a variety of products such as chlorohydrin, vinylchloride, and sulfoxide other than ene-type products, suggesting that the functional group of R in 2 affects the reaction cou...
作者:Shelli R. Mellegaard-Waetzig、Chao Wang、Jon A. Tunge
DOI:10.1016/j.tet.2005.12.072
日期:2006.7
Organoselenides catalyze the oxidation of halides by H2O2. Furthermore, these selenides catalyze the transfer of oxidized halogens from N-halosuccinimides to olefins and ketones. Thus, organoselenides catalyze oxidative halogenation reactions including halolactonization, α-halogenation of ketones, and allylic halogenation. The ability of selenium to undergo reversible 2e− oxidation–reduction chemistry
有机硒化物通过H 2 O 2催化卤化物的氧化。此外,这些硒化物催化氧化的卤素从N-卤代琥珀酰亚胺向烯烃和酮的转移。因此,有机硒化物催化氧化卤化反应,包括卤代内酯化,酮的α-卤化和烯丙基卤化。硒的能力经历可逆2E -氧化-还原化学功能有助于卤化硒通过绑定卤中间体。
Selective Selenocatalytic Allylic Chlorination
作者:Jon A. Tunge、Shelli R. Mellegaard
DOI:10.1021/ol036525o
日期:2004.4.1
[GRAPHICS]Ene-chlorination of olefins by N-chlorosuccinimide is catalyzed by phenylselenenyl chloride. This reaction demonstrates the catalytic conversion of C-H bonds into more reactive C-Cl bonds.