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Please login or sign up for a free trial to access the full content. Method 12: Synthesis by Modification of Oxetanes at the Periphery

DOI: 10.1055/sos-SD-037-00246

Griesbeck, A. G.; Sokolova, T.Science of Synthesis, (200837465.

Liquid crystalline polyoxetanes can be synthesized by cationic ring-opening polymerization. The oxetane monomer 186 (Scheme 66) bearing one mesogenic unit produces high-molecular-weight polymers, whereas the ones bearing two mesogenic units at the same carbon in the ring produce only oligomeric products.[‌27‌] Oxetanes substituted at C3 with mesyloxymethyl and bromomethyl groups are transformed into the corresponding 3-phosphinomethyl-substituted oxetanes, substrates for the synthesis of tripod ligands by further oxetane ring opening.[‌147‌] Oxetan-2-ylmethyl acrylate is available from oxetan-2-ylmethanol and acrylic acid.[‌148‌]

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