Synthetic routes to thirty crown ether compounds with pendent N,N-dial
kylamide groups are reported. The new lariat ethers are based on sym-(
R)dibenzo-13-crown-4-oxyacetamide, sym-(R)dibenzo-14-crown-4-oxyacetam
ide and sym-(R)dibenzo-16-crown-5-oxyacetamide, in which R = H or alky
l, and sym-(propyl)dicyclohexano-16-crown-5-oxacetamide. Two acyclic p
olyether analogues with pendent N,N-dialkylamide groups are also prepa
red.