Reactivite des propargyl- et allenyl-boronates de dibutyle vis-a-vis des derives carbonyles : I. Condensation d'aldehydes et de cetones peu encombres

Abstract Allenylboronates react with aldehydes and ketones to give unsymmetrical borates. Alcohols are obtained after hydrolysis in 50-80% yields. With sterically unhindered carbonyl compounds boronates react by the propargyl-allenyl rearrangement.