Cycloaddition reactions of the titanium imide [Ti(NBut){MeC(2-C5H4N)(CH2NSiMe3)(2)}(py)] with (BuCP)-C-t and MeCN

The diamidopyridine-supported titanium imide [Ti(NBut)(L)(py)] [1, L = MeC(2-C5H4N)(CH2-NSiMe3)(2)] undergoes a [2+2] cycloaddition reaction with (BuCP)-C-t to form the mononuclear product [Ti{N(Bu-t)PC(Bu-t)}(L)] (2). In contrast, reaction of 1 with MeCN affords the binuclear derivative [Ti-2{mu-et...

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Published inOrganometallics Vol. 19; no. 16; pp. 3205 - 3210
Main Authors Pugh, SM, Trosch, DJM, Wilson, DJ, Bashall, A, Cloke, FGN, Gade, LH, Hitchcock, PB, McPartlin, M, Nixon, JF, Mountford, P
Format Journal Article
LanguageEnglish
Published WASHINGTON Amer Chemical Soc 07.08.2000
Subjects
Chemistry
Chemistry, Inorganic & Nuclear
Chemistry, Organic
Physical Sciences
Science & Technology
ARYLOXIDE
COORDINATION CHEMISTRY
ACTIVATION
MONONUCLEAR
LIGANDS
NITRILES
MOLECULAR-STRUCTURES
COMPLEXES
REACTIVITY
ALKYNES
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Summary:The diamidopyridine-supported titanium imide [Ti(NBut)(L)(py)] [1, L = MeC(2-C5H4N)(CH2-NSiMe3)(2)] undergoes a [2+2] cycloaddition reaction with (BuCP)-C-t to form the mononuclear product [Ti{N(Bu-t)PC(Bu-t)}(L)] (2). In contrast, reaction of 1 with MeCN affords the binuclear derivative [Ti-2{mu-eta(2)-NC(Me)NBut}(2)(L)(2)] (3), which contains a doubly deprotonated N-tert-butylacetamidinate ligand. Compound 3 undergoes a quantitative cycloreversion reaction at elevated temperatures yielding MeCN and [Ti(NBut)(L)] (4).
ISSN:0276-7333
DOI:10.1021/om000264u