Addition Reaction of 1,4-Dibromo-2,5-piperazinedione with 3,4-Dihydro-2<i>H</i>-pyran
作者:Kuniaki Itoh、Akira Sera
DOI:10.1246/bcsj.59.479
日期:1986.2
Reaction of 1,4-dibromo-2,5-piperazinedione (1) with 3,4-dihydro-2H-pyran (2) under irradiation gave 1 : 1 and 1 : 2-addition products (3,4) and corresponding secondary products (5–7). The adducts were considered to be produced separately by photoinduced free radical addition as well as concomitant ionic addition reactions.
Photoaddition Reaction of 1,4-Dibromo-2,5-piperazinedione with Cyclohexene
作者:Kuniaki Itoh
DOI:10.1246/bcsj.56.1705
日期:1983.6
The photo-induced addition reaction of 1,4-dibromo-2,5-piperazinedione (1) with cyclohexene in acetonitrile gave 1 : 1-adducts[1-(2-bromocyclohexyl)-2,5-piperazinediones] and 1 : 2-adducts[1,4-bis(2-bromocyclohexyl)-2,5-piperazinediones] besides 3-bromocyclohexene, 1,2-dibromocyclohexane, and a solvent-incorporated product, trans-2-acetylamino-2-bromocyclohexane. Stereochemistry of the adducts was
Photoinduced Addition Reaction of 1,4-Dibromo-2,5-piperazinedione with 1-Alkenes
作者:Kuniaki Itoh、Hiroshi Yamada、Akira Sera
DOI:10.1246/bcsj.57.2140
日期:1984.8
Irradiation of 1,4-dibromo-2,5-piperazinedione (1) with olefins in acetonitrile gave mixtures of addition products (1:1-adducts and 1:2-adducts). Addition of 1,2-epoxybutane (a hydrogen bromide scavenger) resulted in enhanced yields of the adducts. Structures of the adducts were elucidated and a reaction mechanism is discussed.