On the mechanism of formation and fragme
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Paulus A. Kraakman; Paulus J. K. M. Eeken; Willem H. de Wolf; Friedrich Bickelha
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Article
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2010
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Elsevier Science
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English
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## Abstract Regiospecifically labelled 3β[(^13^C)methylene]spiro[5.7]tridecaβ1,4βdiene (2aβ²) and (1β^13^C)βdispiro[2.2.6.2] tetradecaβ4,13βdiene (7aβ²) were prepared. By flash vacuum thermolysis (FVT) at 600Β°C, 2aβ² was converted into [8]paracyclophane (1aβ²) in 95% yield. The label in 1aβ² was found a