Synthesis and characterization of Cp2Ti-containing organometallics via in situ oxidative-addition of ‘Cp2Ti’ intermediate.
摘要:
A simple and convenient route for synthesizing CP2Ti-containing compounds (RS)(2)TiCP2 (1, R = l-C10H7; 2, R = CH2-CHCH2; 3, R=n-C5H11; 4. R=CH2CO2Me; 5, R=CH2CO2Et; 6, R=(eta(5)-C5H5)Fe(eta(5)-C5H4CH2)) and [eta(2)-OC(Ph)=C(h)O]ToCp(2) (7) has been developed. This route starts from Cp2TiCl2 and involves an in situ oxidative-addition of the intermediate 'titanocene' with corresponding RSSR and benzil. While 7 was previously prepared by another route, 1-6 and one starting material [(eta(5)-C5H5)Fe(eta(5)-C5H4CH2)](2)S-2 (8) are new and have been characterized by elemental analysis, IR and H-1-NMR spectroscopy, as well as by X-ray diffraction analysis for 1, 6 and 7. Furthermore, the electrochemical properties of 1-6 have been studied by cyclic voltammetry. (C) 2002 Elsevier Science B.V. All rights reserved.
Homogeneous Catalytic Dehydrocoupling/Dehydrogenation of Amine−Borane Adducts by Early Transition Metal, Group 4 Metallocene Complexes
作者:Matthew E. Sloan、Anne Staubitz、Timothy J. Clark、Christopher A. Russell、Guy C. Lloyd-Jones、Ian Manners
DOI:10.1021/ja909535a
日期:2010.3.24
The efficient catalytic dehydrocoupling of a range of amine-borane adducts, R'RNH x BH(3) (R' = R = Me 1a; R' = R = (i)Pr 1b; R' = Me, R = CH(2)Ph 1c) by a series of group 4 metallocene type precatalysts has been demonstrated. A reduction in catalytic activity was detected upon descending the group and also on substitution of the cyclopentadienyl (Cp) ligands with sterically bulky or electron-donating
Reactions of nitrogen mono-oxide with dicyclopentadienyltitanium complexes, including the formation of isocyanate from nitrogen mono-oxide and carbon mono-oxide
作者:Frank Bottomley、Ivan J. B. Lin
DOI:10.1039/dt9810000271
日期:——
Nitrogenmono-oxide (NO) rapidly oxidises TiIII(cp)2 complexes (cp =η-C5H5) according to the equations (i)–(iii) where ‘Ti(cp)2O’ refers to a polymeric oxide of TiIV. The oxidation (iii) is complicated by the formation of small amounts of an NCO complex. Excess of [Ti(cp)2(CO)2] and NO react in toluene at 20 (70) or 65 °C (16 h)[Ti(cp)2Cl}2]+ 2NO →[Ti(cp)2Cl}2O]+ N2O (i), 2[Ti(cp)2(NCO)]+ 2NO →[Ti(cp)2(NCO)}2O]+
Substituted Heterocyclic Ethers and Their Use in CNS Disorders
申请人:Degnan Andrew P.
公开号:US20090018132A1
公开(公告)日:2009-01-15
The invention encompasses compounds of Formula I, including pharmaceutically acceptable salts, their pharmaceutical compositions, and their use in treating CNS disorders.
Substituted heterocyclic ethers and their use in CNS disorders
申请人:Bristol-Myers Squibb Company
公开号:US08026257B2
公开(公告)日:2011-09-27
The invention encompasses compounds of Formula I, including pharmaceutically acceptable salts, their pharmaceutical compositions, and their use in treating CNS disorders.
Formation, reactivities, and molecular structures of phosphine derivatives of titanocene. Isolation and characterization of a titanium monoolefin .pi. complex
作者:Bruce H. Edwards、Robin D. Rogers、David J. Sikora、Jerry L. Atwood、Marvin D. Rausch