Ni. Ivanova et al., Acetals containing acetylenic groups and their surface activity in the system LiN(SO2CF3)(2)-tetraglyme, RUS J AP CH, 73(1), 2000, pp. 117-120
Acetals exhibiting surface activity in the system LiN(SO2CF3)(2)-MeO(CH2CH2
O)(4)Me can be prepared in a quantitative yield by electrophilic addition o
f acetylenic alcohols to vinyl heptyl ether and divinyl ethers of glycols i
n the presence of trifluoroacetic acid.