Photocyclization

In organic chemistry, a photocyclization is a chemical reaction taking place under the influence of light , in which a cyclic compound is formed from an open-chain (linear) compound.

Overview reaction

A simple reaction shows - using the example of 1,3-butadiene - the formation of cyclobutene by photochemical cyclization :

The newly made bonds are marked in red in the reaction scheme. Educt and product have the same empirical formula C ₄ H ₆ .

However, the reaction only proceeds with a 30% yield .

Individual evidence

↑ Waldemar Adam, Thomas Oppenlaender, Gerald Zang: The 185-nm photochemistry of cyclobutene and bicyclo [1.1.0] butane . In: Journal of the American Chemical Society . tape 107 , no. 13 , June 1, 1985, pp. 3921-3924 , doi : 10.1021 / ja00299a028 .
↑ Albert Gossauer: Structure and reactivity of biomolecules . Helvetica Chimica Acta, Zurich 2006, ISBN 978-3-906390-29-1 , p. 143.

[1] Waldemar Adam, Thomas Oppenlaender, Gerald Zang: The 185-nm photochemistry of cyclobutene and bicyclo [1.1.0] butane . In: Journal of the American Chemical Society . tape 107 , no. 13 , June 1, 1985, pp. 3921-3924 , doi : 10.1021 / ja00299a028 .

[Gossauer-2] Albert Gossauer: Structure and reactivity of biomolecules . Helvetica Chimica Acta, Zurich 2006, ISBN 978-3-906390-29-1 , p. 143.