Lanthanocene catalysts in selective organic synthesis

GA Molander, JAC Romero - Chemical reviews, 2002 - ACS Publications
Synthetic organic chemists have scoured the depths and breadth of the periodic table in
search of novel, unique, and efficient methods to assemble small molecules. Metal …

Metallacycle transfer from zirconium to main group elements: a versatile synthesis of heterocycles

PJ Fagan, WA Nugent… - Journal of the American …, 1994 - ACS Publications
The reaction of zirconium metallacycles is used to produce a variety of main group
heterocycles including borole Diels-Alder dimers, gallóles, indacyclopentadienes, siloles …

Alkene and Alkyne Complexes of Zirconocene. Their Preparation, Structure, and Novel Transformations.

E Negishi, T Takahashi - Bulletin of the Chemical Society of Japan, 1998 - jlc.jst.go.jp
Dialkylzirconocenes in situ generated such as Cp 2 Zr (n-Bu) 2, Cp 2 ZrEt 2, and Cp 2 Zr (t-
Bu)(i-Bu) are thermolyzed to afford zirconocene-alkene complexes. In the cases of Cp 2 Zr …

Reductive cyclization of enones by a titanium catalyst

NM Kablaoui, SL Buchwald - Journal of the American Chemical …, 1995 - ACS Publications
Reductive Cyclization of Enones by a Titanium Catalyst Page 1 J. Am. Chem.Soc. 1995, 117,
6785-6786 6785 Reductive Cyclization of Enones by a Titanium Catalyst Natasha M. Kablaoui …

Ruthenium(II)-Catalyzed Isomer-Selective Cyclization of 1,6-Dienes Leading to exo-Methylenecyclopentanes:  Unprecedented Cycloisomerization Mechanism …

Y Yamamoto, Y Nakagai, N Ohkoshi… - Journal of the American …, 2001 - ACS Publications
In the presence of a catalytic amount of ruthenium (II) complexes,[RuCl2 (cod)] n, RuCl2
(cod)(MeCN) 2,[RuCl2 (nbd)] n,[RuCl2 (CO) 3] 2, and Cp* Ru (cod) Cl, 1, 6-dienes were …

Synthesis and reactivity of zirconaaziridines

SA Cummings, JA Tunge, JR Norton - New Aspects of Zirconium …, 2005 - Springer
Abstract η 2-Imine complexes of zirconium, or zirconaaziridines, have attracted attention as
amino carbanion equivalents. They can be prepared from an amine via C–H activation …

Deoxygenative Cycloaddition of Aldehydes with Alkynes Mediated by AlCl3 and Zirconium: Formation of Cyclopentadiene Derivatives

Z Xi, P Li - Angewandte Chemie International Edition, 2000 - Wiley Online Library
Cleavage of the aldehyde C= O bond takes place in the zirconocene‐and AlCl3‐mediated
cyclization of two molecules of an alkyne with an aldehyde to afford cyclopentadiene …

Development of a Method for the Reductive Cyclization of Enones by a Titanium Catalyst

NM Kablaoui, SL Buchwald - Journal of the American Chemical …, 1996 - ACS Publications
An effective protocol in which bis (trimethylphosphine) titanocene is used to catalyze the
reductive cyclization of enones to cyclopentanols via a metallacyclic intermediate has been …

Reactions of 1, 4-and 2, 3-diazadienes with titanocene and zirconocene complexes of bis (trimethylsilyl) acetylene: acetylene coupling or substitution including …

T Zippel, P Arndt, A Ohff, A Spannenberg… - …, 1998 - ACS Publications
The reaction of 1, 4-diazadienes RN CHCH NR with the titanocene and zirconocene
complexes of bis (trimethylsilyl) acetylene Cp2M (L)(η2-Me3SiC2SiMe3)(M= Ti, without L …

Structure-reactivity correlations for the formation of zirconocene. eta. 2-imine complexes from amines

N Coles, MCJ Harris, RJ Whitby, J Blagg - Organometallics, 1994 - ACS Publications
-19 J Kr1 mol-1 for the elimination of methane. A cyclometalation involving deprotonation a
to nitrogen by (R4)-best fits the data. The relationship between the rate of the reaction and …