Polyalkylindanes of the type described in earlier communications
1 S. H. Weber, D. B. Spoelstra and Ernest H. Polak, Rec. trav. chim. 74, 1179 (1955).
2 S. H. Weber, J. Stofberg, D. B. Spoelstra and R. J. C. Kleipool, ibid. 75, 1433 (1956).
may also be prepared by condensation of styrenes and alkenes under the influence of suitable catalysts
3
This new synthesis of polyalkylindanes is the subject of French Patent, 1, 109, 699 of Oct. 10, 1954, assigned to Polak's Frutal Works Inc., others pending.
5
All U.V. spectra were determined with a Unicam SP 500 spectrophotometer, using 95 % ethanol as solvent. Melting points were taken in an electrically heated m.p. block (Culatti). Melting and boiling points are uncorrected. Analyses by Messrs. P. J. Hubers and J. Pieters, Laboratory of Organic Chemistry of the Municipal University, Amsterdam.
7
Prepared by dehydration of tert. amyl alcohol with p-toluenesulphonic acid as catalyst. A 60 plate Podbielniak Heligrid column enabled separation of 2-methyl-1-butene from 2-methyl-2-butene.
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