The Effect of Carbonyl Containing Substituents in the Terminal Chains on Mesomorphic Properties in Some Aromatic Esters and Thioesters.6.Phenylbenzoates Containing a (CH2)nCOR′ Group (n= 1,2) on the Phenolic End
作者:
M.E. Neubert,
I.G. Shenouda,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1992)
卷期:
Volume 210,
issue 1
页码: 185-194
ISSN:1058-725X
年代: 1992
DOI:10.1080/10587259208030767
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Substituted phenylbenzoates of the typewhereX= R, RO; (Y= (CH2)nCOR′,n= 1, R′ = C8H17andn= 2, R′ = C7H15have been prepared to determine the effect of the spacer methylene groups on the mesomorphic properties of esters having a ketone chain on the phenolic side. The required precursor phenols were prepared by treatment of the protected acidswith an alkyllithium followed by hydrogenolysis of the benzyl group. The analogous cyclohexane diesterswere also synthesized to test the generality of trends observed in mesomorphic properties. Hot stage polarizing microscopy was used to determine mesomorphic properties. These were compared to those for the esters withY= C10H21, COR′ and (CH2)nCO2R′ (n= 1,2).
点击下载:
PDF (536KB)
返 回