Verfahren zur Herstellung von Cyclododecen

摘要

1,255,379. Cyclododecene. TOAGOSEI CHEMICAL INDUSTRY CO. Ltd., and A. NISONO. 29 Dec., 1969 [26 May, 1969], No. 63146/69. Heading C5E. Cyclododecene is produced by liquid phase selective hydrogenation of 1,5,9-cyclododecatriene in the presence of (1) a catalyst complex comprising a cobalt carbonyl and a tertiary phosphine PR 3 in which the R's are the same or different alkyl or cycloalkyl groups, and (2) at least one mole of carbon monoxide per gram atom of cobalt present, the amount of carbon monoxide being such that its partial pressure is less than 4 kg./cm2.