Establishment of a highly reliable and safe procedure for the preparation of TlBH4 has led to, for the first time, a simple approach to TlTp-related complexes, which are known as mild and efficient Tp-transfer reagents to a variety of metals. The practical use of this method has been demonstrated by the efficient synthesis of (S,S,S)-TlTp4Bo3MeCpenta from a new and hard-to-obtain chiral pyrazole (HPz). In view
Synthesis and Properties of Planar-Chiral (<b><i>η</i></b><sup>6</sup>-Benzene)(<b><i>η</i></b><sup>5</sup>-cyclopentadienyl)ruthenium(II) Complexes in an Optically Pure Form
um complexes [Ru(η5-1-CO2R*-2-Me-4-R1C5H2)(η6-C6H6)][X] (4 and 8) (R* = (l)- or (d)-menthyl; R1 = Me, Ph, t-Bu, 2-Naphthyl, or 4-BrC6H4; X = PF6 or BPh4) were synthesized in a diastereomerically pureform. The absolute configuration of 8b and 4c (R1 = Ph, t-Bu) were determined by an X-ray crystallographic analysis and those of the others were assigned on the basis of their optical properties including
The preparation of several 1,2,3,4,5-functionalized cyclopentane derivatives
作者:André S Kelch、Peter G Jones、Ina Dix、Henning Hopf
DOI:10.3762/bjoc.9.195
日期:——
With the goal of eventually synthesizing [5]radialene (3), the still missing member of the parent radialene hydrocarbons, we have prepared the pentaacetates 21 and 31, the pentabromide 29 and the hexabromide 32. In principle these should be convertible by elimination reactions to the desired target molecule.
Carbonsulfur bond cleavage in CpRu(η5-thiophene)+ and subsequent reactions of the butadiene-thiolate product
作者:Johannes W. Hachgenei、Robert J. Angelici
DOI:10.1016/0022-328x(88)89037-5
日期:1988.11
as H2Al(OCH2CH2OMe)2− to give (eq. 3) the CS cleaved butadiene-thiolate product 3. Subsequent reactions of 3 are shown: This scheme is not intended to indicate that all reactions were performed on the thiophene complex; many were carried out using the methyl-substituted thiophene analogs. Structures of complexes of the types 6 and 9 were established by X-ray diffraction studies. Possible mechanisms
Thallium(I)- and organothallium(III)-substituted mono-, bis- and tris-tetrazoles: synthesis and supramolecular structures
作者:Sonali Bhandari、Mary F. Mahon、Kieran C. Molloy、Julie S. Palmer、Stephen F. Sayers
DOI:10.1039/a910235n
日期:——
Six thallium(I) tetrazolates have been synthesized by either the addition of an alcoholic solution of the appropriate tetrazole to an ethanolic solution of thallium ethoxide, or from the sodium salt of the tetrazole with Tl2SO4. Seven diphenylthallium-substituted mono- and bis-tetrazoles have been synthesized by a condensation route involving the appropriate tetrazole and diphenylthallium hydroxide
通过添加适当浓度的乙醇溶液,已经合成了六种四唑al(I)四唑 到乙醇th的乙醇溶液中,或从 钠盐 的 四唑用Tl 2 SO 4。通过缩合反应合成了七个二苯基th取代的单-和双-四唑四唑 和 氢氧化二苯th。1-二苯基噻烯基-5-苯基四唑也可以通过之间的环加成反应制得叠氮化二苯th 和 苄腈。[Tl(18-crown-6)+ ] 2 [C 2 N 10 2− ],Ph 2 TlN 4 CPh·MeOH,1,4-(Ph 2 TlN 4 C)2 C 4 H 8 ·2MeOH的结构和1,2-(PH 2 TLN 4 C)2 C ^ 6 ħ 4 ·博士2 TLCL·2MeOH·2H 2 ö已被确定。后三种化合物产生掺入六元Tl 2 N 4环的超分子结构。最后两个包含第一个示例四唑 利用所有四个可用环 氮 进行协调。