Phosphorous and Sulfur and the Related Elements · 1987 · 24 citations · 3 references
Natural SciencesChemistryOrganic ChemistryHeterocycle SynthesisHeterocyclic ChemistryOrganic SynthesisExtrusionRing-forming Reactions
Abstract The syntheses of phospholes (7, [3+2]-cycloaddition), bicyclophosphaalkenes (17, [4+2]-cycloaddition), and phosphabenzenes (15, [4+2]-cycloaddition followed by an extrusion process) starting from the phosphaalkynes (4) are described. The 2–Dewar phosphabenzene 18, obtained from the cyclobutadiene 21 and 4 (R =tBu), is the starting material for the synthesis of the valency isomers 19, 20, 22, and 23.
3
Gerd Becker, Gudrun Gresser, Werner Uhl · Zeitschrift für Naturforschung B · 1981 · 393 citations · Full text
Wolfgang Rösch, Manfred Regitz · Zeitschrift für Naturforschung B · 1986 · 61 citations · Full text
Natural Sciences, Chemistry, Natural Product Biosynthesis +4