An aza-oxy-carbanion relay via tandem Michael addition/ring opening of cyclopropane and recyclization/carbanion migration/electrophile trapping has been developed by the utilization of 1-cinnamoylcyclopropanecarboxamides to react with various electrophiles. This represents the first example of anion relay chemistry via non-Brook rearrangement. This novel protocol has been applied in the facile and efficient synthesis of biologically active bicyclic furo[3,2-c]pyridinone compounds.
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Liang et al. (2011) studied this question.
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