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。
Sequential Addition Reactions of Lithium Acetylides and Grignard Reagents to Selenoiminium Salts Leading to 2-Propynyl Tertiary Amines Bearing a Tetrasubstituted Carbon Center
作者:Toshiaki Murai、Sho Nogawa、Yuichiro Mutoh
DOI:10.1246/bcsj.80.2220
日期:2007.11.15
Selenoiminium salts generated in situ from selenoamides and MeOTf were reacted sequentially with lithium acetylides and Grignardreagents to give 2-propynyl tertiary amines bearing a tetrasubstitut...
Reaction of diisobutylaluminium hydride with selenium and tellurium: new reagents for the synthesis of seleno- and telluro-amides
作者:Guang Ming Li、Ralph A. Zingaro
DOI:10.1039/a707792k
日期:——
Diisobutylaluminium hydride (Bui2AlH) undergoes reaction with elemental selenium and tellurium to afford new reagents having an Al–Se or an Al–Te bond. These directly convert amides to selenoamides and telluroformamides. This affords a one-pot route to selenoamides and telluroformamides starting from Se and Te, and may be suitable for large scale syntheses.
selenoamides (2) from nitriles, metallic selenium, carbonmonoxide, water, and amines have been developed on the basis of an amino-group-exchange reaction of in situ formed N-unsubstituted selenoamides (1) with primary or secondary amines. The reactions consist of two processes, i.e., the formation of selenoamides 1 by the reaction of nitriles and H2Se formed from selenium, carbonmonoxide and water, and the subsequent
Reactions of Phosphonate Carbanions with Selenium or Sulfur in the Presence of Amines. Synthesis of Seleno- and Thioamides.
作者:Kentaro Okuma、Koumei Ikari、Hiroshi Ohta
DOI:10.1246/cl.1992.131
日期:——
The reaction of phosphonatecarbanions with elemental selenium in the presence of amines afforded the corresponding selenoamides in moderate yields. The reaction of these anions with sulfur also gave thioamides. These reactions might proceed through thio- or selenoaldehyde intermediates