Entropically-driven ring-opening metathesis polymerization (ED-ROMP) of macrocyclic olefins prepared from deoxycholic acid to give functionalized polymers‡
Literature Information
Philip Hodge, Abdel Chakiri
Three new families of macrocyclic olefins were prepared from deoxycholic acid. Two of these have a novel structure in that the bile acid unit is linked to a C20 fatty acid unit via the 3α- and 12α-positions, thus creating macrocycles with rings with a repeat unit of 29 ring atoms. Entropically-driven ring-opening methathesis polymerizations (ED-ROMPs) of the macrocycles gives polymers with free hydroxyl groups, or free methyl or t-butyl carboxylic ester groups. The latter could be converted into carboxylic acid groups by treatment with trifluoroacetic acid. The polymers form transparent hole-free films that are potentially useful for supporting cell growth.
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