Tetrahedron

Flash vacuum thermolysis of dispiro [2.2. n. 2] alkadienes

PA Kraakman, ETJ Nibbering, WH De Wolf…

Index: Kraakmann, P. A.; Nibbering, E. T. J.; Wolf, W. H. de; Bickelhaupt, F. Tetrahedron, 1987 , vol. 43, # 21 p. 5109 - 5124

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Citation Number: 4

Abstract

The Flash Vacuum Thermolysis (FVT) of dispiro [2.2. 6.2]-tetradeca-4, 13-diene (7a), dispiro [2.2. 5.2] trideca-4, 12-diene (7b) and dispiro [2.2. 2.2] deca-4, 9-diene (7e) at 500–750° C is reported. The complicated reaction mixture from 7a and 7b (Scheme 3) included at lower temperatures vinylspiroalkadienes 9, ethylidenespiroalkadiene 10b, β- ethylcycloalkabenzenes 11, while at higher temperatures, pn-alkyl-(5) and p-sec- ...