Synthesis and reactivity of mixed alkynylalanes by direct triethylamine-catalyzed alumination of terminal alkynes.
[reaction: see text] Terminal alumination of alkynes by DIBALH or trimethylaluminum can be performed in a simple manner in the presence of a small amount of triethylamine. This new Lewis-base-catalyzed process delivers mixed alkynyldialkylalanes of great interest, without the need of an initial deprotonation step with lithium or sodium derivatives followed by a transmetalation.
Feuvrie
Christophe
C
Laboratoire de Chimie Thérapeutique, UMR 8638 associée au CNRS et à l'Université René Descartes, Faculté des Sciences Pharmaceutiques et Biologiques, 4 av de l'Observatoire, 75270 Paris Cedex 06, France.
Blanchet
Jérôme
J
Bonin
Martine
M
Micouin
Laurent
L