Tetrahedron Letters p. 3327 - 3330 (1982)
Update date:2022-08-03
Topics:
Negishi, Ei-ichi
Boardman, Larry D.
Treatment of (E)-2-methyl-1-alkenylalanes (1), readily obtainable via Zr-catalyzed reaction of Me3Al with 1-alkynes, with E-methoxydialkylboranes produces the corresponding alkenylboranes, while sequential treatment of 1 with n-BuLi and X2ZrCp2 (X=Cl or I) provides the desired monoalkenylzirconium derivatives, the product yields for both reactions being 85-100percent.
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(1983)
