Abstract
The acid-catalyzed alkene-aldehyde condensation, known as the Prins reaction, is reviewed. Lewis acids, organic acids and supported catalysts have been reported to assist both the Prins acyclic reaction and the Prins cyclization. Acetals and oxocarbenium ions (generated from aldehydes and alcohols) have been described as reacting systems in the Prins reaction. Prins cyclizations have been used to form mainly five- and six-membered rings, albeit formation of seven to nine rings have been described. The Prins reaction (and cyclization) has been developed as a key strategic element in the total synthesis of different natural products.
Keywords: Organic Acid, styrenes, hetero Diels-Alder reaction, Lewis acid catalysts, stereoselective Prins reaction
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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