Die Ultraviolettabsorption einiger aromatischer Kohlenwasserstoffe

Thermolyses of 3-alkyl-4-phenyl-2-oxetanones and related compounds

“…The olefins thus confirmed by their production were cis-and frarzs-l-phenylpropenes,39"42 cisand trans-3methyl-l-phenyl-l-butenes,39 cis-and trons-3,3-dimethyl-lphenyl-1-butenes,39 2-methyl-l-phenylpropene,40,43 2-methyl-1,1 -diphenylpropene,44 cts-stilbene,45 trarzs-stilbene,46"47 and pnitrostyrene. 48 The last olefin [mp 26-27 °C (lit.9,48 mp 29 °C)] had a tendency to polymerize in a concentrated solution, but the presently applied conditions for 9 (1.1 X 10"3 mol/L in the presence of TMEDA) allowed us to observe the quantitative formation of the styrene.…”

The Ultraviolet Absorption Spectra of Aromatic Hydrocarbons.

“…The effect of conjugation of the side-chain double bond with the naphthalene ring is less marked than its influence on the benzene chromophore; it may be noted that the conjugated compound shows no fine structure. Closure of the side chain to form a ring, as in 7-methylperinaphthene (67,236) (XXXVIII), leads to a 197); -, 1-allylnaphthalene in ethanol as solvent (193);----, 1-methylnaphthalene in ethanol as solvent (193).…”

“…Ultraviolet absorption spectra. -,1-propenylnaphthalene in ethanol as solvent(197); -, 1-allylnaphthalene in ethanol as solvent(193);----, 1-methylnaphtha-…”