NEW SIMPLE METHOD FOR THE SYNTHESIS OF CIS-STILBENES
A new method involving catalytic acetylenic condensation as the key stage was developed for the synthesis of cis-stilbenes.Subsequent selective hydrogenation of the synthesized alkyltolanes over Pd-CaCO3 gave a series of alkyl-substituted stilbenes. 1,8-Dimethylphenanthrene was obtained from o-iodotoluene.
Merkushev, E. B.,Skorokhodova, T. S.
p. 308 - 311
(2007/10/02)
Photocyclization of 1,2-Diarylethylenes in Primary Amines. A Convenient Method for the Synthesis of Dihydro Aromatic Compounds and a Means of Reducing the Loss of Methyl Groups during the Cyclization of o-Methylstilbenes
Synthesis of 1,8-(6',7'-Dioxododecamethylene)phenanthrene
The Synthesis of the title compound (1) is described starting from o,o'-stilbenedicarboxylic acid which was converted to o,o'-bisstilbene which underwent acyloin cyclization and oxidation to give 1 in 9.5percent overall yield.Spectro
Rubin, Mordecai B.,Welner, Samuel
p. 1847 - 1852
(2007/10/02)
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