Homogeneous catalytic aminocarbonylation of 1-iodo-1-dodecene. The facile synthesis of odd-number carboxamides via palladium-catalysed aminocarbonylation

Various amine nucleophiles including glycine methyl ester were used in the palladium-catalysed aminocarbonylation of (E)- and (Z)-1-iodo-1-dodecene. The substrates were synthesised from 1-dodecanal via the corresponding hydrazone, which was treated with iodine in the presence of tetramethylguanidine. The homogeneous catalytic aminocarbonylation resulted in the corresponding odd-number carboxamides in moderate to good yields. The reaction was accompanied by the formation of some carboxamides with triple bonds in the 2-position. The latter products were formed in relatively high yields with secondary amines such as piperidine and morpholine and were isolated as pure compounds.