A facile one-pot synthesis of a-halo-a-allyl-aldehydes from a,a-dihaloketones using allylsamarium bromide and DMF.

[摘要]：A convenient, one-pot synthesis of a range of a-halo a-allyl aldehydes is described. The protocol involves the reaction of allylsamarium bromide with various a,a-dihalo ketones. A possible mechanism of the transformation is proposed.

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