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ChemInform Abstract Copper-or rhodium-catalyzed thermal reaction of the diazoacetates (I) in the presence of the dienes (II) or hept-1-yne (IV) yields the vinylcyclopropanes (III) or the cyclopropene (V). Under similar conditions, the β-hydroxyethylamides (VI) undergo intramolecular cyclization to give the morpholinones (VII).

ChemInform Abstract 2-Bromoethyl diazoacetate (I) reacts with the free secondary amines (II) or the hydrochlorides of the primary amines (V) to give the aminoethyl esters (III) or (VI). The free primary amines (V) yield the N-alkyl-N-(β-hydroxyethyl)amides (IV).