Abstract
Abstract Addition of the Allenic amine H2C═C═CHNMe2 and the corresponding N-morpholinoallene to a solution of an aromatic or heteroaromatic aldehyde, RCH═O, and lithium bromide in tetrahydrofuran followed by treatment of the reaction mixture with a small amount of acetic acid at elevated temperatures affords the aldehydes RCH═C(CH2NR'2)CH═O (NR'2=NMe2 or morpholino) in reasonable yields.
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