[EN] BORON-CONTAINING CYCLIC EMISSIVE COMPOUNDS AND COLOR CONVERSION FILM CONTAINING THE SAME [FR] COMPOSÉS ÉMISSIFS CYCLIQUES CONTENANT DU BORE ET FILM DE COLORISATION CONTENANT CEUX-CI
Insights into the diastereoselective control in the sulfa-Michael addition of thiols to nitroalkenes: stereoelectronic effect in the cyclic chelated transition state
two approximately 1,2-diaxial substituents due to stereoelectroniceffectcontrol. The stereoelectroniceffect in the cyclic chelated transition state was probed and verified by tuning the steric bulkiness of the corresponding substituents. The reaction involving 1-nitrocyclohexene provided perfect support for the proposed diastereoselective control model. The current investigation provided not only
PALLADIUM CATALYZED SYNTHESIS OF ALLYLIC SULFONES. UTILIZATION OF α-NITRO OLEFINS AS ALLYLIC NITRO COMPOUNDS
作者:Rui Tamura、Koji Hayashi、Masato Kakihana、Masanori Tsuji、Daihei Oda
DOI:10.1246/cl.1985.229
日期:1985.2.5
α-Nitro olefins reacted with sodium benzenesulfinate in the presence of tertiary amine and palladium(0) catalyst to afford allylic sulfones. The competition experiment showed that relative rate of the sulfonylation of an α-nitro olefin to that of the corresponding allylic acetate was about 2.2.
Diastereoselective preparation of anti-β-amino alcohols via michael addition of alkoxide anions to nitroolefins and subsequent hydrogenation reaction
作者:Akio Kamimura、Noboru Ono
DOI:10.1016/s0040-4039(01)80295-1
日期:——
Diastereoselective conjugate addition of benzylalkoxide anion to nitroolefins and subsequent hydrogenation reaction provide a new convenient method for the preparation of anti-β-amino alcohols.