✦ LIBER ✦

The unexpected thermal instability of 3,4-tetramethylene-1,2-dioxetane as compared to that of cis-3,4-diethyl-1,2-dioxetane.

✍ Scribed by A.L. Baumstark; C.E. Wilson

Book ID: 104237797
Publisher: Elsevier Science
Year: 1979
Tongue: French
Weight: 161 KB
Volume: 20
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)86350-4

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✦ Synopsis

3,4_Tetramethylene-and cis-3,4-diethyl-1,2-dioxetane (l_ and 2!) were prepared and characterized (for i-Ea =22.5 kcal/mole,log A=12.8; for 2 -Ea =24.5 kcal/mole, log A=13.1). 1,2-Dioxetanes undergo thermal decomposition to produce two carbonyl fragments, one of which can be generated in an excited state .' Thermolysis of simply substituted dioxetanes has beenshown to directly produce high yields of excited triplet carbonyls ? For some dioxetanes, activation

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