Electrochemical Oxidations of 1,3-Dihydro-1,3-diazaazulanones and Effects of Reaction Temperature
2002
Electrochemical oxidations of 1-tosyl-3-aryl-1,3-dihydro-1,3-diazaazulanones at 0°C afforded 3-aryl-6-tosyl-1,3-dihydro-1,3-diazaazulanones via migrations of the tosyl group. However, the same type of electrochemical oxidations at an elevated temperature (25 °C) gave another type of product, i.e., double bond isomers, 1-tosyl-3-aryl-1,3-dihydro-1,3-diazaazulanones via 1,5-hydrogen migration, together with 3-aryl-6-tosyl-1,3-dihydro-1,3-diaza-azulanones.
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