Title of article :
Methylenepyran unsaturated Fischer carbene complexes from γ-methylpyrylium salts and alkynylcarbenes. Evolution to spiro-pyran-cyclopentenone compounds
Author/Authors :
Ba، نويسنده , , Fatou and Le Poul، نويسنده , , Pascal and Guen، نويسنده , , Françoise Robin-Le and Cabon، نويسنده , , Nolwenn and Caro، نويسنده , , Bertrand، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2010
Abstract :
Push–pull methylenepyran compounds 3 containing ferrocenyl or aryl groups are synthesized from reaction of condensation between γ-methyl-pyrylium salts 1 as precursors of γ-methylenepyrans and alkynylcarbene complexes 2 as Michaël-type acceptors. The new carbenes 3 evolve in CH2Cl2 solution at room temperature to provide spiro-fused-pyran-cyclopentenenone 4 and polysubstituted cyclopentenones 5.
Keywords :
Spiro-fused-pyran-cyclopentenenone , Fischer alkynylcarbenes complexes , Push–pull molecules , Methylenepyrans
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
