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New preparation of α-allenic ketones

✍ Scribed by Didier Bernard; Alain Doutheau


Book ID
108382603
Publisher
Elsevier Science
Year
1985
Tongue
French
Weight
117 KB
Volume
26
Category
Article
ISSN
0040-4039

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The addition of several alkylmagnesium halides to an a-allenyl ketone leads to the corresponding a,b-unsaturated ketones as single geometrical isomers. A p-chelation between the metal and the unsaturation is proposed to explain the steric outcome of this reaction.