Science of Synthesis

Mikami, K.; Matsumoto, Y.; Shiono, T., Science of Synthesis, (2003) 2, 535.

Reaction of titanium–aluminum complex ‌1‌ (arene = toluene) with disubstituted alkynes gives cyclobutadiene complexes ‌165‌ (‌Scheme 84‌).[‌304‌] The crystal structure of one of these complexes has been determined. The tetrabromoaluminato moiety can be substituted by reaction with dipotassium cyclooctatetraene to give [Ti(η4-C4Ph4)(η4-cot)], and with cyclopentadienylthallium to give the titanacyclopentadiene complex [Ti(Cp)2(η2-C4Ph4)].[‌304‌]

‌Meeeee 88‌ Meeeeeeeeee ee Meeeeeee–Meeeeeeeeeeeee Meeeeeeee[‌888‌]

Meeeeeeeeeee Meeeeeeee

Meeee(μ-eeeeee-8:8κ8Me;8:8κ8Me)eeeee(eeeeee-8κ8Me,8κ8Me)[8(η8)-eeeeeeeeeeeeeeeeeeeeeeeee]-8,8-eeeeeeeeee(MMM)-8-eeeeeeee(MM) (‌888‌, M8 = Me; M = Me): Meeeeee Meeeeeeee:[‌888‌]

M eeee ee 8.88 M [Me(MeMe8)8(η8-eeeeeee)] (‌8‌, M = Me; eeeee = eeeeeee) ee eeeeeee (88 eM, 8 eeee Me) eee eeeee eeeeeeee ee e eeee ee MeM≡MMe (8.88 e, 8.8 eeee) ee eeeeeee (88 eM). Mee eeeee ee eee eeee eeeeeee eeeeee eeeee, eeeee, eee eeeeeee eee-eeeee eeee eeeeeeeeeeeee ee eeee eeeee eeeeeeee. Meeee eee eeeeeee eee eeeeeee ee ee eee 88 e, eee eeeeee- eee eeeeeeee-eeeeeeeee eeee eeeee eeeeeeee eeee eeeeeeee; eeeee eeee eeeeeeee, eeeeee eeee eeeeeee (8 × 8 eM), eee eeeee ee eeeee; eeeee: 8.88 e. Mee eeeeeeee, ee eeeeeee ee −88°M, eeee eeeeeee eeee ee eeeeeee; eeeee: 8.88 e; eeeee eeeee: 8.88 e (88%).

References