首页> 外文期刊>Chemistry: A European journal >Olefin Metatheses in Metal Coordination Spheres: Versatile New Strategies for the Construction of Novel Monohapto or Polyhapto Cyclic, Macrocyclic, Polymacrocyclic, and Bridging Ligands
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Olefin Metatheses in Metal Coordination Spheres: Versatile New Strategies for the Construction of Novel Monohapto or Polyhapto Cyclic, Macrocyclic, Polymacrocyclic, and Bridging Ligands

机译:金属配位领域中的烯烃复分解:新型单链或多链环,大环,多环和桥联配体构建的多功能新策略

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摘要

The broad applicability of the title reaction is established through studies of neutral and charged, coordi-natively saturated and unsaturated, octahedral and square planar rhenium, platinum, rhodium, and tungsten complexes with cyclopentadienyl, phosphine, and thioether ligands which contain terminal olefins. Grubbs' catalyst, [Ru(=CHPh)(Pcy_3)_2(Cl)_2], is used at 29mol% levels (0.0095-0.00042M, CH_2Cl_2). Key data are as follows:[#eta#~5C_5H_4(CH_)_6CH=CH_2_Re(NO)(PPh_3)(CH_3)], intermolecular metathesis (95%); [(#eta#~5-C_5H_5)Re(NO)(PPh_3)(E(CH_2CH=CH_2)_2)]~+ TfO~-(E=S, PMe,PPh), formation of five-membered heterocycles (96-64%; crystal structure E=PMe); [#eta#~5-C_5Me_5]Re(NO)(PPh)(CH_2)_6CH=CH_2(L)]~(n+)nBF_4~-(L=CO/1, C1/0), intramolecular macrocyclization (94-89%; crystal structure L=Cl); fac-](CO)_3Re(Br)(PPh_2(CH_2)_6CH=CH_2)_2] and cis-[(Cl)_2Pt(PPh_2(CH_2)_6CH=CH_2)_2], intramolecular macrocyclizations (80-71%; crystal structures of each and a hydrogenation product); cis-[(Cl)_2Pt(S(R)(CH_2)_6CH=CH_2)_2], intra-/intermolecular macrocyclization (R=Et, 55%/24%;tBu, 72%/<4%); trans-[(Cl)(L)M(PPh_2(CH_2)_6CH=CH_2)_2](M/L=Rh/CO,Pt/C_6F_5) in tramolecular macrocyclization (90-83%; crystal structure of hydrogenation product, M=Pt); fac-[W(CO)_3(PPh((CH_2)_6CH=CH_2)_2)_3], intramolecular trimacrocyclization(83%) to a complex mixture of triphosphine, diphosphine/monophosphine, and tris(monophosphine) complexes, from which two isomers of the first type are crystallized. The macrocycle conformations, and basis for the high yields, are analyzed.
机译:通过研究中性和带电,配位饱和和不饱和,八面体和方形平面planar,铂,铑和钨与含有末端烯烃的环戊二烯基,膦和硫醚配体的配合物,可以建立标题反应的广泛适用性。格鲁布斯的催化剂[Ru(= CHPh)(Pcy_3)_2(Cl)_2]的用量为29mol%(0.0095-0.00042M,CH_2Cl_2)。关键数据如下:[#eta#〜5C_5H_4(CH _)_ 6CH = CH_2_Re(NO)(PPh_3)(CH_3)],分子间复分解(95%); [(#eta#〜5-C_5H_5)Re(NO)(PPh_3)(E(CH_2CH = CH_2)_2)] + TfO〜-(E = S,PMe,PPh),形成五元杂环(96 -64%;晶体结构E = PMe); [#eta#〜5-C_5Me_5] Re(NO)(PPh)(CH_2)_6CH = CH_2(L)]〜(n +)nBF_4〜-(L / n = CO / 1,C1 / 0),分子内大环化( 94-89%;晶体结构L = Cl); m / z。 fac-](CO)_3Re(Br)(PPh_2(CH_2)_6CH = CH_2)_2]和cis-[(Cl)_2Pt(PPh_2(CH_2)_6CH = CH_2)_2],分子内大环化(80-71%;晶体各自的结构和氢化产物);顺式-[(Cl)_2Pt(S(R)(CH_2)_6CH = CH_2)_2],分子内/分子间大环化(R = Et,55%/ 24%; tBu,72%/ <4%);反式-[(Cl)(L)M(PPh_2(CH_2)_6CH = CH_2)_2](M / L = Rh / CO,Pt / C_6F_5)在分子大环化中(90-83%;氢化产物的晶体结构,M = Pt); fac- [W(CO)_3(PPh((CH_2)_6CH = CH_2)_2)_3],分子内三环环化(83%)为三膦,二膦/单膦和三(单膦)配合物的复杂混合物第一类异构体结晶。分析了大环构象以及高产的基础。

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