Dimerization of cyclopentadienones

CFH Allen, JA VanAllan

Index: Allen; VanAllan Journal of the American Chemical Society, 1950 , vol. 72, p. 5165

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Citation Number: 55

Abstract

C~H/=\C~H~ VI The dimeric products (VII) from 2,5-dimethyl- 3,4-diphenyl-11 and 2,3,5-triphenylcyclopentadie - none12 dissociate readily in solution, while the 2- methyl-3,4-diphenyl derivative, at 200°, gives two (1) Thiele, Bcr., 88, 669 (1900). (2) Alder and Stein, Ann., 496, 205 (1932). (3) Zincke and Fuchs, Bcr., 46, 515 (1893). (4) Zincke, Ann., 867, 1 (1909). (5) Zincke and Pfaffendorf, ibid., 894, 7 (1912). (6) Bergmann and Francke, ibid., 996, 167 (1897). (7) F'rentzell, ibid., 996, ...