New Schiff bases derived from 2, 5-dihydroxybenzaldehyde and amino-substituted 2-phenyl-1, 3-benzothiazoles. Mesogenic monomers for liquid crystalline …

AV Chernienko, YN Nikiforova, LI Rudaya…

Index: Chernienko; Nikiforova; Rudaya; Ramsh; Shamanin Russian Journal of Organic Chemistry, 2011 , vol. 47, # 10 p. 1604 - 1605

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Abstract

Condensation of 2, 5-dihydroxybenzaldehyde (I) with amino-substituted 2-phenyl-1, 3- benzothiazoles II and III in methanol in the presence of HCl gave new Schiff bases IV and V which can be used as mesogenic heteroaromatic monomers for the synthesis of potentially mesogenic rigid–flexible polyethers.(7.2 mmol) of 2, 5-dihydroxybenzaldehyde (I) in 40 ml of methanol containing 0.02 ml of concentrated hydrochloric acid was added dropwise to a ...

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