Phospha-alkynes - Useful Building Blocks in Organic Chemistry1 |
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| Authors: | Manfred Regitz Wolfgang Rösch Thomas Allspach Ulrich Annen Karsten Blatter Jürgen Fink |
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| Institution: | Department of Chemistry , University of Kaiserslautern, Erwin-Schr?dinger-Stra?e , D-6750, Kaiserslautern, Federal Republic of Germany |
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| Abstract: | 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. |
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