In this paper we describe the unprecedented reaction between alpha-diazo esters 1 and iodine. The reaction, carried out in the presence of aqueous NaHCO3, afforded the Z-isomer of the corresponding unsaturated-2-iodo ester 8. The configuration of compounds 8 was determined using the 3J(C-H) coupling between carbonyl carbon atom and alkene proton. Mechanistic considerations accounting for the observed phenomena and including quantum chemical calculations are proposed.
Exploring the reaction of iodine with α-diazo esters
VERARDO, Giancarlo;GEATTI, Paola;GAMBI, Alberto
2009-01-01
Abstract
In this paper we describe the unprecedented reaction between alpha-diazo esters 1 and iodine. The reaction, carried out in the presence of aqueous NaHCO3, afforded the Z-isomer of the corresponding unsaturated-2-iodo ester 8. The configuration of compounds 8 was determined using the 3J(C-H) coupling between carbonyl carbon atom and alkene proton. Mechanistic considerations accounting for the observed phenomena and including quantum chemical calculations are proposed.File in questo prodotto:
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