Reaktionen von vinylketonen mit stabilisierten phosphoniumyliden
1997; Elsevier BV; Volume: 38; Issue: 27 Linguagem: Inglês
10.1016/s0040-4039(97)01043-5
ISSN1873-3581
AutoresHans Jürgen Bestmann, Andreas Groß,
Tópico(s)Organophosphorus compounds synthesis
ResumoAcylphosphoniumylids 1 react with vinylketones 2 under formation of 1-acyl-4-oxolids 3. In the reaction of carboalkoxytriphenylphosphoranes 4 with 2 two reaction pathways occur. In polar solvents again a Michael-addition gives the phosphoranes 6, whereas in nonpolar solvents a quasimethathesis-reaction leads to acrylic esters 9 and the acylphosphoranes 1. By 1O2 3 and 6 are oxidized to give the tricarbonyl-compounds 10 resp. 11.
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