Allylamines (I) have been isomerized cleanly to prop-1-enylamines (II) on a dispersion of potassium amide on alumina.(CH2CH· CH2) xR3–xN→(CH3· CHCHxR3–xN,(x= 1, 2, 3) The method has many advantages over older ones for the preparation of some of the lower enamines, and for the preparation of di-and tri-(prop-1-enyl) amines (II; x= 2 and 3). The yields are good and the recovery of the product of isomerization is easier than with older ...
