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The influence of non planarity in styrene and stilbene derivatives III: Syntheses and ultra-violet spectra of 4-4′-substituted cis- and transstilbenes

✍ Scribed by G. Riezebos; E. Havinga

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
861 KB
Volume
80
Category
Article
ISSN
0165-0513

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✦ Synopsis

Abstract

A series of cis‐ and trans‐stilbenes magnified image, in which R = H, CN, NO~2~ and R′ = H, CH~3~, OCH~3~, have been synthesized and their ultra‐violet absorption spectra have been recorded. The differences between the spectra of the trans‐compounds and the sterically hindered cis‐isomers as well as the influence of the substituents on the spectra are discussed by means of a semiquantitative treatment.

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Syntheses, infrared spectra and molecular refractions of some sterically hindered p,p′-dimethoxystilbenes: The influence of non-planarity in styrene and stilbene derivatives IV
✍ W. H. Laarhoven; R. J. F. Nivard; E. Havinga 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 839 KB

## Abstract Syntheses of a series of 4,4′‐dimethoxystilbenes, substituted with methyl or ethyl groups in __ortho__ and α‐positions, including the new compounds 2,2′,6,6′‐tetramethyl‐ ; α,2‐dimethyl‐ ; α,2′‐dimethyl‐ ; α,2,2′‐trimethyl‐ and α,α′,2‐trimethyl‐4,4′‐dimethoxystilbene, are described. In