Sodium Selenocarboxylates were found to react with organoarsanyl chlorides Ph3-nAsCln 1-3 (n = 1, 2, 3) to give the corresponding Se-organoarsanyl esters RCOSeAsPh2, (5), (RCOSe)2AsPh (6) and (RCOSe)3As (7) in good yields. The reaction of Se-diphenylarsanyl 4-methylbenzenecarboselenoate 5g with phenylselenenyl bromide and phenyltellurenyl iodide afforded the corresponding Se-phenylselenenyl 13 and Se-phenyltellurenyl esters 14 in moderate yields, while the reaction with sodium phenoxide gave sodium 4-methylbenzenecarboselenoate (4g), phenyl 4-methylbenzoate (11) and phenoxydiphenylarsine (12), indicating the attack of phenoxy anion to both the carbonyl carbon and arsenic atoms.
<i>Peri</i>-Substituted Phosphorus–Tellurium Systems–An Experimental and Theoretical Investigation of the P···Te through-Space Interaction
作者:Andreas Nordheider、Emanuel Hupf、Brian A. Chalmers、Fergus R. Knight、Michael Bühl、Stefan Mebs、Lilianna Chęcińska、Enno Lork、Paula Sanz Camacho、Sharon E. Ashbrook、Kasun S. Athukorala Arachchige、David B. Cordes、Alexandra M. Z. Slawin、Jens Beckmann、J. Derek Woollins
DOI:10.1021/ic503056z
日期:2015.3.2
A series of peri-substituted phosphorus–tellurium systems R′Te–Acenap–PR2 (R′ = Ph, p-An, Nap, Mes, Tip; Acenap = acenaphthene-5,6-diyl (–C12H8); R = iPr, Ph) exhibiting large “through-space” spin–spin coupling constants and the “onset” of three-center four-electron type interactions is presented. The influence of the substituents at the phosphorus and tellurium atoms as well as their behavior upon
一系列周边取代的磷-碲系统R'Te-Acenap-PR 2(R'= Ph,p -An,Nap,Mes,Tip; Acenap = ph-5,6-二基(–C 12 H 8) ; R = i Pr,Ph)表现出较大的“贯穿空间”自旋-自旋耦合常数,并提出了三中心四电子型相互作用的“开始”。使用NMR光谱,单晶X射线衍射和先进的密度讨论了取代基在磷和碲原子上的影响及其行为对氧化(具有S,Se)或金属配位(Pt,Au)的影响功能理论研究,包括NBO,AIM和ELI-D分析。
Substituent effects and stereochemistry in125Te NMR spectroscopy. Diorganyltellurium dihalides and some tellurides and ditellurides
作者:Helmut Duddeck、Armin Biallaβ
DOI:10.1002/mrc.1260320509
日期:1994.4
125Te, 19F and 13C NMR data for 33 compounds containing tellurium substituents are presented. The 125Te chemical shifts in (PhTeCl2)R compounds are between δ = 878 and 1023; in corresponding (PhTeF2)R compounds they are 220 to 360 ppm larger. Effects of substituents and conformational interconversions (dynamic 125Te NMR) are discussed. Several diastereomers were identified in (PhTeCl2)R derivatives
Alkyne-Based, Highly Stereo- and Regioselective Synthesis of Stereodefined Functionalized Vinyl Tellurides
作者:Xian Huang、Chun-Gen Liang、Qing Xu、Qi-Wen He
DOI:10.1021/jo001026b
日期:2001.1.1
(Z)-beta-Aryltellurovinylphosphonates and (Z)-beta-aryltellurovinyl sulfones were synthesized via the highly stereoselective anti-hydrotelluration of 1-alkynylphosphonates and 1-alkynyl sulfones. The configurations of these compounds were characterized via 1H NMR spectra or NOESY experiments and by X-ray diffraction analysis; (E)-beta-aryltellurovinyl sulfones were obtained with the reaction of sodium
(Z)-β-芳基硬脂基乙烯基膦酸酯和(Z)-β-芳基硬脂基乙烯基砜是通过对1-炔基膦酸酯和1-炔基砜进行高度立体选择性的抗氢纤化作用合成的。这些化合物的构型通过1 H NMR光谱或NOESY实验以及X射线衍射分析进行表征。通过芳基碲酸钠与(E)-2-碘乙烯基砜的反应,得到(E)-β-芳基碲基乙烯基砜,从而证实了上述抗加氢碲化的立体化学。当炔烃与二芳基二碲化物和芳基亚磺酸钠的串联反应在AcOH / H2O(4/1)中进行时,一步即可以高收率获得相应的(E)-β-芳基tellurovinyl砜。该反应是高度区域选择性和立体选择性的,并且通过使用芳基亚磺酸盐作为磺酰基自由基前体和二芳基二碲化物作为自由基受体来进行。(E)-1-碘-2-芳基碲代烯烃可通过将ArTeI与末端炔在THF中反加成而获得。化合物17b的立体化学也通过X射线衍射分析确定。
A General Method for the Synthesis of<b>
<i>Te</i>
</b>-Aryl Phosphorotellurate Triesters
A general and practical method for the synthesis of Te-aryl phosphorotellurates is described. A series of Te-aryl phosphorotellurates could be synthesized in good to excellent yields by the reaction of dialkyl, diaryl and trialkyl phosphites with arenetellurynyl and arenetellurenyl halides. A phenylphosphonotelluroate and a phosphorotelluramidate were also prepared by a similar procedure.