Preparation and properties of sulfonate salt‐type cleavable surfactants with a 1,3‐dioxane ring

Abstract

A series of di-anionic cleavable surfactants were prepared by the condensation of aldehydes with 2,2-b/s(hydroxymethyll-l,3-propanediol, followed by reaction with 1,3propanesultone in the presence of sodium hydride. Surfactant 5a had a different 1H nuclear magnetic resonance spectrum in D20 than products 5b-d. This was rationalized by its different conformation, which originates from the self-coiling of its alkyl chain. The critical micelle concentrations, Krafft points and hydrolysis properties of these surfactants were determined.

Crystal structure of 2-(2-bromophenyl)-5-methyl-1,3-dioxane-5-carboxylic acid, C12H13BrO4

“…In addtition, these compounds have insecticidal as well as anti-foaming properties [2,3]. The crystal structures of some similar 1,3-dioxanes have been reported [4][5][6].…”

Crystal structure of 5-methyl-2-phenyl-1,3-dioxane-5-carboxylic acid, C12H14O4

“…This class of compounds has insecticidal as well as anti-foaming properties [2,3]. The title compound 5-methyl-2-phenyl-1,3-dioxane-5-carboxylic acid was synthesized by the reaction of 2,2-Bis(hydroxymethyl) propionic acid with benzaldehyde and p-toluene sulfonic acid as catalyst.…”

Crystal structure of 2-(2-bromophenyl)-5-ethyl-1,3-dioxane-5-carboxylic acid, C13H15BrO4

“…In addtition, this type of compounds have insecticidal as well as anti-foaming properties [2,3]. The crystal structures of some similar 1,3-dioxanes have been reported [4][5][6][7].…”