Results 301 to 310 of about 128,452 (331)
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Synthesis of fused heterocycles from heterocyclic enaminones
Tetrahedron, 1999Abstract The reactivity of readily prepared heterocyclic enanminones with some doubly electrophilic reagents is described. Different classes of interesting fused heterocyclic systems are obtained from these enanminones in a single reaction.
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Il Farmaco, 1999
An overview of the different heterocyclic NO-releasing compounds is given. Mesoionic heterocycles like sydnone imines are one example. This class is discussed on the synthesis and the mechanism of NO formation from Molsidomine and its first metabolite SIN-1.
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An overview of the different heterocyclic NO-releasing compounds is given. Mesoionic heterocycles like sydnone imines are one example. This class is discussed on the synthesis and the mechanism of NO formation from Molsidomine and its first metabolite SIN-1.
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Mononuclear Heterocyclic Rearrangements
Tetrahedron, 1974Publisher Summary This chapter discusses the mononuclear heterocyclic rearrangements. The chapter discusses the ring conversion of type 1→2 characterized by nucleophilic attack from a Z atom on a sp 2 -nitrogen atom with displacement of an atom. On this basis, the known ring conversions are tabulated. Taking into account the reactivities observed
M. Ruccia, N. Vivona, G. Cusmano
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Mesoionic heterocycles and heterocyclic betaine cations (review)
Chemistry of Heterocyclic Compounds, 1983The first part of this review is devoted to correlation of the data of five foreign reviews and the original research and data of the author on the synthesis of mesoionic heterocycles that do not contain ionogenic substituents (heteroatoms) in the side chain.
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