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DOI: 10.1055/sos-SD-002-00797

Negishi, E.-i.; Takahashi, T.Science of Synthesis, (20032801.

Taking into account new and elevated mechanistic perspectives, the mechanisms of zirconium-catalyzed ethyl- and higher alkylaluminations of alkynes first reported in 1978 have been reinvestigated,[‌184‌,‌185‌] and some of the most intricate and intriguing mechanistic details have been disclosed.[‌188‌,‌383‌] In the intervening years, some zirconium-catalyzed cyclic carboalumination reactions of alkenes have also been reported.[‌384‌]

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M8 M8 Meeee Meeeeeee
Me8Me Me Me eeeeee 88 (>88% M) e.e. e.e. [‌888‌]
Me8Me Me Me eeeeeee 88 (>88% M) e.e. 88 (88% M) [‌888‌]
Me8Me (MM8)8Me M eeeeeee 88 (>88% M)
88 (>88% M)
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Me8Me Me M eeeeee 88 (>88% M)
88 (>88% M)
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Me8MeMee Me Me MeMM8MM8Me e.e. 88 (>88% M) 8 (88% M) [‌888‌]
Me8MeMee (MM8)8Me M MeMM8MM8Me e.e. 88 (>88% M)
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e.e. [‌888‌]

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