Electrophilic Activation of Lewis Base Complexes of Borane with Trityl Tetrakis(pentafluorophenyl)borate [0.03%]
三苯基四(五氟苯基)硼酸酯硼烷Lewis碱配合物的亲电活化
Timothy S De Vries,Edwin Vedejs
Timothy S De Vries
Highly Cooperative Tetrametallic Ruthenium-mu-Oxo-mu-Hydroxo Catalyst for the Alcohol Oxidation Reaction [0.03%]
一种用于醇氧化反应的高度协同四金属钌-超氧底羟基催化剂
Chae S Yi,Tonya N Zeczycki,Ilia A Guzei
Chae S Yi
The tetrametallic ruthenium-oxo-hydroxo-hydride complex {[(PCy(3))(CO)RuH](4)(mu(4)-O)(mu(3)-OH)(mu(2)-OH)} (1) was synthesized in two steps from the monomeric complex (PCy(3))(CO)RuHCl (2). The tetrameric complex 1 was found to be a highly...
Borane B-C Bond Cleavage by a Low-Coordinate Iron Hydride Complex and N-N Bond Cleavage by the Hydridoborate Product [0.03%]
低配位铁氢化合物复合物的硼烷B-C键切断及水解硼酸盐产物的N-N键切断
Ying Yu,William W Brennessel,Patrick L Holland
Ying Yu
The iron(II) hydride dimers [L(R)Fe(μ-H)(2)FeL(R)] (L(Me) = 2,4-bis(2,6-diisopropylphenylimino) pent-3-yl; L(tBu) = 2,2,6,6-tetramethyl-3,5-bis(2,6-diisopropylphenylimino)hept-4-yl) abstract hydrocarbyl groups from BR'(3) (R' = Et, Ph) to ...
Non-Redox Assisted Oxygen-Oxygen Bond Homolysis in Titanocene Alkylperoxide Complexes: [Cp(2)Ti(eta-OOBu)L], L = Cl, OTf, Br, OEt(2), Et(3)P [0.03%]
非氧化加成条件下氧氧键均裂制备二茂钛烷基过氧化物配合物[Cp₂Ti(η-OOBu)L] (L=Cl，OTf，Br，OEt₂，Et₃P)
Antonio G Dipasquale,David A Hrovat,James M Mayer
Antonio G Dipasquale
The titanium(IV) alkylperoxide complex Cp(2)Ti(OO(t)Bu)Cl (1) is formed on treatment of Cp(2)TiCl(2) with NaOO(t)Bu in THF at -20 degrees C. Treatment of 1 with AgOTf at -20 degrees C gives the triflate complex Cp(2)Ti(OO(t)Bu)OTf (2), whic...
Studies on the Condensation Pathway to and Properties of Diiron Azadithiolate Carbonyls [0.03%]
二铁氮杂二硫羰基化合物的合成路径和性质研究
Jane L Stanley,Thomas B Rauchfuss,Scott R Wilson
Jane L Stanley
Reaction of Fe(2)(SH)(2)(CO)(6) and HCHO, which gives Fe(2)[(SCH(2))(2)NH](CO)(6) in the presence of NH(3), affords the possible intermediate Fe(2)(SCH(2)OH)(2)(CO)(6), which has been characterized crystallographically as its axial-equatori...
Kinetic Selectivity of Olefin Metathesis Catalysts Bearing Cyclic (Alkyl)(Amino)Carbenes [0.03%]
环状(烷基)(氨基)卡宾金属卡宾催化剂的烯烃元偶联反应的动力学选择性研究
Donde R Anderson,Thay Ung,Garik Mkrtumyan et al.
Donde R Anderson et al.
The evaluation of ruthenium olefin metathesis catalysts 4-6 bearing cyclic (alkyl)(amino)carbenes (CAACs) in the cross-metathesis of cis-1,4-diacetoxy-2-butene (7) with allylbenzene (8) and the ethenolysis of methyl oleate (11) is reported....
Desymmetrized Diiron Azadithiolato Carbonyls: A Step Toward Modeling the Iron-Only Hydrogenases [0.03%]
不对称二铁碳基偶氮硫醇配合物：朝向铁氢酶的合成逼近一步
Jane L Stanley,Zachariah M Heiden,Thomas B Rauchfuss et al.
Jane L Stanley et al.
Condensation of Fe(2)(SH)(2)(CO)(6), acetaldehyde, and (NH(4))(2)CO(3) affords the methyl-substituted azadithiolate Fe(2)[(SCHMe)(2)NH](CO)(6) (1). The complex exists mainly (~95%) as the meso diastereomer, but the d,l diastereoisomers coul...
Mechanistic Investigation of Cycloreversion/Cycloaddition Reactions between Zirconocene Metallacycle Complexes and Unsaturated Organic Substrates [0.03%]
关于夹金属环配合物与不饱和有机底物之间的开环/重新环化反应的机理研究
Rebecca L Zuckerman,Robert G Bergman
Rebecca L Zuckerman
Treatment of the diazametallacycle Cp(2)Zr(N(t-Bu)C=N(SiMe(3))N(SiMe(3))) (4a) with diphenylacetylene resulted in the formation of the azametallacyclobutene Cp(2)Zr(N(t-Bu)C(Ph)=C(Ph)) (6a) and Me(3)SiN=C=NSiMe(3) in high yield. A kinetic s...
Zachary K Sweeney,Jennifer L Polse,Robert G Bergman et al.
Zachary K Sweeney et al.
The titanocene sulfido complex Cp*(2)Ti(S)py (1, Cp* = pentamethylcyclopentadienyl; py = pyridine) is synthesized by addition of a suspension of S(8) to a toluene solution of Cp*(2)Ti-(CH(2)CH(2)) (2) and py. The rate of rotation of the pyr...
Density Functional Study of Mo-Carbonyl-Catalyzed Alkynol Cycloisomerization: Comparison with W-Catalyzed Reaction [0.03%]
茂金属羰基催化炔醇环异构化反应的密度泛函理论研究并与钨催化剂体系进行比较
Taraneh Nowroozi-Isfahani,Djamaladdin G Musaev,Frank E McDonald et al.
Taraneh Nowroozi-Isfahani et al.
Mo-catalyzed endo-cycloisomerizations of alkynes tethered to alcohols have been studied using density functional theory, and comparisons were made with the W-catalyzed reaction. The cycloisomerization is initiated with the formation of meta...