1,2,3,5,7-Pentaselena-4,6,8-triphosphocane as the Revised Structure for “3,4,5-Triselenoxo-1,2-diselena-3,4,5-triphospholane” Determined by X-Ray Analysis
摘要:
通过 X 射线分析,明确确定了一种新型含磷硒八元杂环化合物 1,2,3,5,7-pentaselena-4,6,8-triphosphocane 的结构,即 3,4,5-triselenoxo-1,2-diselena-3,4,5-triphospholane 的修正结构。
MeOTf-Mediated Alkynylation of Selenoamides Leading to β-Methylselenenyl α,β-Unsaturated Ketones and Their Characterization
作者:Toshiaki Murai、Yuichiro Mutoh、Shinzi Kato
DOI:10.1021/ol015968u
日期:2001.6.1
[reaction: see text] beta-Methylselenenyl alpha,beta-unsaturatedketones were effectively synthesized by treating selenoamides with methyl triflate, followed by reaction with lithium acetylides. The reaction proceeded with high stereoselectivity to give exclusively Z-isomers. (77)Se NMR studies and X-ray molecular structure analysis of beta-methylselenenyl alpha,beta-unsaturatedketones suggested that
A new type of phosphorus-selenium containing heterocyclic compound, 3,4,5-tris(2,4-di-t-butyl-6-methoxyphenyl)-3,4,5-triselenoxo-1,2-diselena-3,4,5-triphospholane, was prepared and was allowed to react with amides to give the corresponding selenoamides in good yields.