71518-96-2Relevant academic research and scientific papers
1-Iodo-1-selenoalkenes as versatile alkene 1,1-dianion equivalents. Novel connective approach towards the tetrahydropyran subunit of polycavernoside A
Pérez-Balado, Carlos,Markó, István E.
, p. 2331 - 2349 (2007/10/03)
syn-Hydroalumination of 2,4,6-triisopropylphenylselanyl-1-alkynes with DIBAL-H followed by Al/I exchange with I2 afforded exclusively (E)-1-iodo-1-selenoalkenes in good yields. 1-Iodo-1-selenopropene 10 proved to be a convenient 1,1 dianion equivalent, leading to the stereodivergent synthesis of allylsilanes (Z)-6 and (E)-6. Adduct 3, an intermediate in the synthesis of the tetrahydropyran subunit of polycavernoside A, was efficiently synthesised from allylsilane (Z)-6 and aldehyde 7 via an intramolecular Sakurai cyclisation.
Stereoselective synthesis of (E)-1-iodo-1-selenoalkenes via hydroalumination-iodination of 1-alkynyl selenides
Pérez-Balado, Carlos,Lucaccioni, Fabio,Markó, István E.
, p. 4883 - 4886 (2007/10/03)
syn-Hydroalumination of 2,4,6-triisopropylphenylselanyl-1-alkynes 22 with DIBAL-H, followed by Al/I exchange with I2, afforded selectively the corresponding (E)-1-iodo-1-selenoalkenes in good yields. The sterically hindered 2,4,6-triisopropylphenyl group proved to be mandatory and prevented the formation of undesired by-products.
NEW STERICALLY CONGESTED ORGANOSELENIUM AND TELLURIUM COMPOUNDS
Mont, Wolf-Walter du,Sewing, Dirk,Meyer, Hans-Ulrich,Martens, Reiner,Ostrowski, Martin,Salzen, Andreas Martens von
, p. 11 - 26 (2007/10/02)
The report on recent preparative, n.m.r. spectroscopic and structural results concerning steric effects in organoselenium and -tellurium chemistry covers: 1. extremely bulky ditellurides and diselenides, including rotational barriers and unusual conformat
Sterically Hindered Thiolato, Selenolato and Tellurolato Complexes of Mercury(II)
Bochmann, Manfred,Webb, Kevin J.
, p. 2325 - 2330 (2007/10/02)
Mercury(II) complexes of sterically demanding arenechalcogenolato ligands, Hg(EC6H2-2,4,6)2 (E = S or Se; R = Me, Pri or But: E = Te; R = Me or Pri) have been prepared.Whereas complexes carrying smaller aryl substituents (R = Me) are polymeric, those with R = Pri and But form linear two-co-ordinate molecules.For a given R, the volatility of the complexes increases for E = S Pri >> But.
Sterically Hindered Chalcogenolato Complexes. Mono- and Di-meric Thiolates and Selenolates of Zinc and Cadmium; Structure of t3-2,4,6)2>2>, the First Three-co-ordinate Cadmium-Selenium Complex
Bochmann, Manfred,Webb, Kevin J.,Hursthouse, Michael B.,Mazid, Muhammed
, p. 2317 - 2323 (2007/10/02)
Protolysis of M2 (M = Zn or Cd) with arenechalcogenols 2,4,6-R3C6H2EH (E = S or Se; R = Me, Pri or But) gives the corresponding chalcogenolato complexes M(EC6H2R3-2,4,6)2 in high yield.Complexes with R = Me form co-ordinat
