3-Diazoalkenes cyclization

Finally, not all applications of Cul involve organocuprates or related reagents. For example, Corey used Cul to catalyze intramolecular diazoalkene cyclization reactions, and Yates used Cul to catalyze the Wolff rearrangement of diazo ketones. Flouse recommended CuL(SBu2)2 for the intermolecular cyclo-propanation of alkenes with a-diazo ketones. The intermediates are undoubtedly organocopper species of some kind, perhaps Cu-carbene complexes however, it should be noted that Cu and Cu are more commonly used as catalysts in conjunction with diazo compounds. ... 

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See also in sourсe #XX -- [ , , , ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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