Kaleidoscopic Photochemical Behavior of Unsymmetric Diolefin Crystals
- 1 August 1992
- journal article
- research article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 219 (1) , 1-15
- https://doi.org/10.1080/10587259208032112
Abstract
Various types of topochemical [2+2] photocycloaddition behaviors are described focusing on the recent results of a series of alkyl pyridylethenylcinnamate derivatives. Highly stereo regular polymerization and “absolute” asymmetric synthesis were achieved by using crystal-lattice controlled [2+2] photocyclo-additions. Product control by employing co-crystallization of solvent molecules and a low temperature photo irradiation technique is demonstrated in the topochemical photoreactions of diolefin molecules. A methodology for the synthesis of highly strained compounds, [2.2]paracyclophane derivatives, in the crystalline state is also described.Keywords
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