Coarctate reactions as a third fundamental organic- mechanistic type
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چکیده
It happens that this reaction bears a close similarity to epoxidation using peracid, the characteristic feature being that the central (spiro) atom has two bonds forming to it and two bonds breaking from it in both reactions. I had noted for the latter reaction that in fact the bond redistribution, although concerted, was asynchronous. This asynchrony was represented by the green arrows preceding the blue ones (or vice-versa for the reverse reaction).
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Thermochemistry and photochemistry of spiroketals derived from indan-2-one: Stepwise processes versus coarctate fragmentations
Coarctate reactions are defined as reactions that include atoms at which two bonds are made and two bonds are broken simultaneously. In the pursuit of the discovery of new coarctate reactions we investigate the fragmentation reactions of cyclic ketals. Three ketals with different ring sizes derived from indan-2-one were decomposed by photolysis and pyrolysis. Particularly clean is the photolysi...
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