Consequently, the synthetic strategy towards DAs with extended spacers was changed to another one requiring only a single nucleophilic substitution. This was acom-plished by using the acetylenic tosylates 8 and 9, replacing their tosylate groups with phenoxides, and subsequent oxidative coupling of the obtained acetylenic aryl ethers (Scheme 2). Thereby, acetylenic aryl ethers 1-(3, 5-dichlo-rophenoxy)-2-(2-propynyloxy) ethane (1221), 1-( ...