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Showing 1 to 2 of 2 for “"α-Diazosulfonates"”.
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Synthetic and stereochemical aspects of enantioselective copper catalysed C-H insertion reactions leading to cyclopentanones and sultones
… phosphine oxides, 2-diazo-1,3-diketones and αdiazosulfonates, and their reactivity in intramolecular copper–bis(oxazoline)–NaBARF catalysed C–H insertion reactions. Excellent enantioselectivities of up to 91% ee were achieved in the synthesis of cyclopentanones and up to 95% ee in the …
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Novel synthetic methodology employing transition metal catalysed reactions of α-diazo-β-keto sulfonamides and α-cyano-α-diazoacetates; the impact of substituents on the reaction pathway
… of the comparable α-diazo-β-oxo sulfones and α-diazosulfonates. Use of copper(II) triflate (5 mol%) led to the isolation of a series of alkynesulfonamides (up to 12% yield) and enamines (up to 64% yield). Use of copper(II) chloride (5 mol%) led to the formation, in addition, of …