The biradical intermediate which results from the thermal ring fission of alkylidene cyclobutanones serves as a common precursor of isomerised cyclobutanones (1,3 carbon shift), and of dienones by way of intramolecular 1,5 hydrogen shift.
由亚烷基
环丁酮的热环裂变产生的双自由基中间体用作异构化的
环丁酮(1,3碳转移)和二烯酮的常见前体,其分子内有1,5氢转移。