Reactivity Enhanced Selectivity. Dienophile Dependent<i>π</i>-Facial Selectivity in the Diels-Alder Reactions of 5-Substituted 1,3-Cyclopentadienes
作者:Masaru Ishida、Shizuko Kakita、Satoshi Inagaki
DOI:10.1246/cl.1995.469
日期:1995.6
chemistry, it was proposed that the selectivity is enhanced by the reactivity in a certain class of reactions. The reactivity-enhanced selectivity (RES) theory was experimentally confirmed by the π-facial selectivities in the Diels-Alder reactions of 5-phenylthiocyclopentadiene dependent on the reactivities of dienophiles.
ISHIDA, MASARU;AOYAMA, TAKAMICHI;KATO, SHINZI, CHEM. LETT.,(1989) N, C. 663-666
作者:ISHIDA, MASARU、AOYAMA, TAKAMICHI、KATO, SHINZI
DOI:——
日期:——
1-HEXENE PRODUCTION PROCESS
申请人:Sumitomo Chemical Company, Limited
公开号:US20170036200A1
公开(公告)日:2017-02-09
Disclosed is transition metal complex that serves as a catalytic component with which 1-hexene can be produced efficiently with excellent selectivity, even under high temperature conditions, by means of an ethylene trimerization reaction. Said transition metal complex is represented by the following general formula (1), wherein M
1
represents a Group 4 transition metal atom, and R
1
through R
11
and X
1
through X
3
each independently represent a hydrogen atom, a halogen atom, or a specific organic group.
US9919300B2
申请人:——
公开号:US9919300B2
公开(公告)日:2018-03-20
Preparation of Monodisperse ZnS Nanoparticles by Size Selective Photocorrosion
The size-distribution of ZnS nanoparticles (Q-ZnS) of 4.2 ± 0.6 nm was narrowed to 2.6 ± 0.2 nm by sequential irradiation with monochromatic light of 313 nm, 303 nm, and 297 nm to an air-saturated ZnS colloidal solution in the presence of sodium hexametaphosphate as a stabilizer and methylviologen as an electron acceptor.