The work is now extended to include related compounds in which the alkylene chain is interrupted by an oxygen, according to the general formula Ar-O-R'-OR*-N%, in which Ar is an aryl or arylalkyl residue, R'and R* are bivalent alkylene radicals and NR, is the residue from a tertiary amine.
![Benzene,[2-(2-chloroethoxy)ethoxy]- Structure](https://image.chemsrc.com/caspic/254/2243-44-9.png)
![[2-(2-Phenoxyethoxy)ethyl]diethylamine Structure](https://image.chemsrc.com/caspic/411/24480-59-9.png)