Chemistry Letters, Vol.34, No.2, 164-165, 2005
Facile preparation of helical ladder-type polymers with fused phenoxathiine rings
Poly(3-chiral methylsulfinyl-1,2-phenyleneoxide) was synthesized, and the regioselective intramolecular ring-closing of the pendant sulfoxide on the polymer formed the corresponding helical ladder structure comprising of a fused phenoxathiine ring. The CD of the ladder polymer gave a Cotton effect which was caused by the chirality of the pendant group.