Abstract
Abstract Metalloallyls of benzothiazole, benzoxazole and pyrimidine 2 condense with aldehydes to furnish α-regioisomers 3 and 4 or γ-regioisomer 5 depending upon the experimental conditions and the nature of the metal of 2 . The allylic condensation of 2 with aldehydes appears to proceed with satisfactory to high syn diastereoselectivity as for the α-regioisomers; γ-regiosomers are of exclusive trans configuration.
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